21240480

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:191

約数の個数: 192

約数和(自身を含む): 75116160

約数和(自身を除く): 53875680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 19, 20, 24, 30, 32, 34, 38, 40, 48, 51, 57, 60, 68, 76, 80, 85, 95, 96, 102, 114, 120, 136, 137, 152, 160, 170, 190, 204, 228, 240, 255, 272, 274, 285, 304, 323, 340, 380, 408, 411, 456, 480, 510, 544, 548, 570, 608, 646, 680, 685, 760, 816, 822, 912, 969, 1020, 1096, 1140, 1292, 1360, 1370, 1520, 1615, 1632, 1644, 1824, 1938, 2040, 2055, 2192, 2280, 2329, 2584, 2603, 2720, 2740, 3040, 3230, 3288, 3876, 4080, 4110, 4384, 4560, 4658, 4845, 5168, 5206, 5480, 6460, 6576, 6987, 7752, 7809, 8160, 8220, 9120, 9316, 9690, 10336, 10412, 10960, 11645, 12920, 13015, 13152, 13974, 15504, 15618, 16440, 18632, 19380, 20824, 21920, 23290, 25840, 26030, 27948, 31008, 31236, 32880, 34935, 37264, 38760, 39045, 41648, 44251, 46580, 51680, 52060, 55896, 62472, 65760, 69870, 74528, 77520, 78090, 83296, 88502, 93160, 104120, 111792, 124944, 132753, 139740, 155040, 156180, 177004, 186320, 208240, 221255, 223584, 249888, 265506, 279480, 312360, 354008, 372640, 416480, 442510, 531012, 558960, 624720, 663765, 708016, 885020, 1062024, 1117920, 1249440, 1327530, 1416032, 1770040, 2124048, 2655060, 3540080, 4248096, 5310120, 7080160, 10620240, 21240480]

約数ペア:

[(1, 21240480), (2, 10620240), (3, 7080160), (4, 5310120), (5, 4248096), (6, 3540080), (8, 2655060), (10, 2124048), (12, 1770040), (15, 1416032), (16, 1327530), (17, 1249440), (19, 1117920), (20, 1062024), (24, 885020), (30, 708016), (32, 663765), (34, 624720), (38, 558960), (40, 531012), (48, 442510), (51, 416480), (57, 372640), (60, 354008), (68, 312360), (76, 279480), (80, 265506), (85, 249888), (95, 223584), (96, 221255), (102, 208240), (114, 186320), (120, 177004), (136, 156180), (137, 155040), (152, 139740), (160, 132753), (170, 124944), (190, 111792), (204, 104120), (228, 93160), (240, 88502), (255, 83296), (272, 78090), (274, 77520), (285, 74528), (304, 69870), (323, 65760), (340, 62472), (380, 55896), (408, 52060), (411, 51680), (456, 46580), (480, 44251), (510, 41648), (544, 39045), (548, 38760), (570, 37264), (608, 34935), (646, 32880), (680, 31236), (685, 31008), (760, 27948), (816, 26030), (822, 25840), (912, 23290), (969, 21920), (1020, 20824), (1096, 19380), (1140, 18632), (1292, 16440), (1360, 15618), (1370, 15504), (1520, 13974), (1615, 13152), (1632, 13015), (1644, 12920), (1824, 11645), (1938, 10960), (2040, 10412), (2055, 10336), (2192, 9690), (2280, 9316), (2329, 9120), (2584, 8220), (2603, 8160), (2720, 7809), (2740, 7752), (3040, 6987), (3230, 6576), (3288, 6460), (3876, 5480), (4080, 5206), (4110, 5168), (4384, 4845), (4560, 4658)]