21250657920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{2957}}^1$

素因数の和:3195

約数の個数: 256

約数和(自身を含む): 71687721600

約数和(自身を除く): 50437063680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 197, 228, 240, 285, 304, 320, 380, 384, 394, 456, 480, 570, 591, 608, 640, 760, 788, 912, 960, 985, 1140, 1182, 1216, 1520, 1576, 1824, 1920, 1970, 2280, 2364, 2432, 2955, 2957, 3040, 3152, 3648, 3743, 3940, 4560, 4728, 5910, 5914, 6080, 6304, 7296, 7486, 7880, 8871, 9120, 9456, 11229, 11820, 11828, 12160, 12608, 14785, 14972, 15760, 17742, 18240, 18715, 18912, 22458, 23640, 23656, 25216, 29570, 29944, 31520, 35484, 36480, 37430, 37824, 44355, 44916, 47280, 47312, 56145, 56183, 59140, 59888, 63040, 70968, 74860, 75648, 88710, 89832, 94560, 94624, 112290, 112366, 118280, 119776, 126080, 141936, 149720, 168549, 177420, 179664, 189120, 189248, 224580, 224732, 236560, 239552, 280915, 283872, 299440, 337098, 354840, 359328, 378240, 378496, 449160, 449464, 473120, 479104, 561830, 567744, 582529, 598880, 674196, 709680, 718656, 842745, 898320, 898928, 946240, 1123660, 1135488, 1165058, 1197760, 1348392, 1419360, 1437312, 1685490, 1747587, 1796640, 1797856, 1892480, 2247320, 2330116, 2395520, 2696784, 2838720, 2912645, 3370980, 3495174, 3593280, 3595712, 4494640, 4660232, 5393568, 5677440, 5825290, 6741960, 6990348, 7186560, 7191424, 8737935, 8989280, 9320464, 10787136, 11068051, 11650580, 13483920, 13980696, 17475870, 17978560, 18640928, 21574272, 22136102, 23301160, 26967840, 27961392, 33204153, 34951740, 35957120, 37281856, 44272204, 46602320, 53935680, 55340255, 55922784, 66408306, 69903480, 74563712, 88544408, 93204640, 107871360, 110680510, 111845568, 132816612, 139806960, 166020765, 177088816, 186409280, 221361020, 223691136, 265633224, 279613920, 332041530, 354177632, 372818560, 442722040, 531266448, 559227840, 664083060, 708355264, 885444080, 1062532896, 1118455680, 1328166120, 1416710528, 1770888160, 2125065792, 2656332240, 3541776320, 4250131584, 5312664480, 7083552640, 10625328960, 21250657920]

約数ペア:

[(1, 21250657920), (2, 10625328960), (3, 7083552640), (4, 5312664480), (5, 4250131584), (6, 3541776320), (8, 2656332240), (10, 2125065792), (12, 1770888160), (15, 1416710528), (16, 1328166120), (19, 1118455680), (20, 1062532896), (24, 885444080), (30, 708355264), (32, 664083060), (38, 559227840), (40, 531266448), (48, 442722040), (57, 372818560), (60, 354177632), (64, 332041530), (76, 279613920), (80, 265633224), (95, 223691136), (96, 221361020), (114, 186409280), (120, 177088816), (128, 166020765), (152, 139806960), (160, 132816612), (190, 111845568), (192, 110680510), (197, 107871360), (228, 93204640), (240, 88544408), (285, 74563712), (304, 69903480), (320, 66408306), (380, 55922784), (384, 55340255), (394, 53935680), (456, 46602320), (480, 44272204), (570, 37281856), (591, 35957120), (608, 34951740), (640, 33204153), (760, 27961392), (788, 26967840), (912, 23301160), (960, 22136102), (985, 21574272), (1140, 18640928), (1182, 17978560), (1216, 17475870), (1520, 13980696), (1576, 13483920), (1824, 11650580), (1920, 11068051), (1970, 10787136), (2280, 9320464), (2364, 8989280), (2432, 8737935), (2955, 7191424), (2957, 7186560), (3040, 6990348), (3152, 6741960), (3648, 5825290), (3743, 5677440), (3940, 5393568), (4560, 4660232), (4728, 4494640), (5910, 3595712), (5914, 3593280), (6080, 3495174), (6304, 3370980), (7296, 2912645), (7486, 2838720), (7880, 2696784), (8871, 2395520), (9120, 2330116), (9456, 2247320), (11229, 1892480), (11820, 1797856), (11828, 1796640), (12160, 1747587), (12608, 1685490), (14785, 1437312), (14972, 1419360), (15760, 1348392), (17742, 1197760), (18240, 1165058), (18715, 1135488), (18912, 1123660), (22458, 946240), (23640, 898928), (23656, 898320), (25216, 842745), (29570, 718656), (29944, 709680), (31520, 674196), (35484, 598880), (36480, 582529), (37430, 567744), (37824, 561830), (44355, 479104), (44916, 473120), (47280, 449464), (47312, 449160), (56145, 378496), (56183, 378240), (59140, 359328), (59888, 354840), (63040, 337098), (70968, 299440), (74860, 283872), (75648, 280915), (88710, 239552), (89832, 236560), (94560, 224732), (94624, 224580), (112290, 189248), (112366, 189120), (118280, 179664), (119776, 177420), (126080, 168549), (141936, 149720)]