257086720

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:113

約数の個数: 216

約数和(自身を含む): 730689120

約数和(自身を除く): 473602400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 31, 32, 38, 40, 44, 55, 62, 64, 76, 80, 88, 95, 110, 124, 128, 152, 155, 160, 176, 190, 209, 220, 248, 256, 304, 310, 320, 341, 352, 380, 418, 440, 496, 589, 608, 620, 640, 682, 704, 760, 836, 880, 961, 992, 1045, 1178, 1216, 1240, 1280, 1364, 1408, 1520, 1672, 1705, 1760, 1922, 1984, 2090, 2356, 2432, 2480, 2728, 2816, 2945, 3040, 3344, 3410, 3520, 3844, 3968, 4180, 4712, 4805, 4864, 4960, 5456, 5890, 6080, 6479, 6688, 6820, 7040, 7688, 7936, 8360, 9424, 9610, 9920, 10571, 10912, 11780, 12160, 12958, 13376, 13640, 14080, 15376, 16720, 18259, 18848, 19220, 19840, 21142, 21824, 23560, 24320, 25916, 26752, 27280, 30752, 32395, 33440, 36518, 37696, 38440, 39680, 42284, 43648, 47120, 51832, 52855, 53504, 54560, 61504, 64790, 66880, 73036, 75392, 76880, 84568, 87296, 91295, 94240, 103664, 105710, 109120, 123008, 129580, 133760, 146072, 150784, 153760, 169136, 182590, 188480, 200849, 207328, 211420, 218240, 246016, 259160, 267520, 292144, 307520, 338272, 365180, 376960, 401698, 414656, 422840, 436480, 518320, 584288, 615040, 676544, 730360, 753920, 803396, 829312, 845680, 1004245, 1036640, 1168576, 1230080, 1353088, 1460720, 1606792, 1658624, 1691360, 2008490, 2073280, 2337152, 2706176, 2921440, 3213584, 3382720, 4016980, 4146560, 4674304, 5842880, 6427168, 6765440, 8033960, 8293120, 11685760, 12854336, 13530880, 16067920, 23371520, 25708672, 32135840, 51417344, 64271680, 128543360, 257086720]

約数ペア:

[(1, 257086720), (2, 128543360), (4, 64271680), (5, 51417344), (8, 32135840), (10, 25708672), (11, 23371520), (16, 16067920), (19, 13530880), (20, 12854336), (22, 11685760), (31, 8293120), (32, 8033960), (38, 6765440), (40, 6427168), (44, 5842880), (55, 4674304), (62, 4146560), (64, 4016980), (76, 3382720), (80, 3213584), (88, 2921440), (95, 2706176), (110, 2337152), (124, 2073280), (128, 2008490), (152, 1691360), (155, 1658624), (160, 1606792), (176, 1460720), (190, 1353088), (209, 1230080), (220, 1168576), (248, 1036640), (256, 1004245), (304, 845680), (310, 829312), (320, 803396), (341, 753920), (352, 730360), (380, 676544), (418, 615040), (440, 584288), (496, 518320), (589, 436480), (608, 422840), (620, 414656), (640, 401698), (682, 376960), (704, 365180), (760, 338272), (836, 307520), (880, 292144), (961, 267520), (992, 259160), (1045, 246016), (1178, 218240), (1216, 211420), (1240, 207328), (1280, 200849), (1364, 188480), (1408, 182590), (1520, 169136), (1672, 153760), (1705, 150784), (1760, 146072), (1922, 133760), (1984, 129580), (2090, 123008), (2356, 109120), (2432, 105710), (2480, 103664), (2728, 94240), (2816, 91295), (2945, 87296), (3040, 84568), (3344, 76880), (3410, 75392), (3520, 73036), (3844, 66880), (3968, 64790), (4180, 61504), (4712, 54560), (4805, 53504), (4864, 52855), (4960, 51832), (5456, 47120), (5890, 43648), (6080, 42284), (6479, 39680), (6688, 38440), (6820, 37696), (7040, 36518), (7688, 33440), (7936, 32395), (8360, 30752), (9424, 27280), (9610, 26752), (9920, 25916), (10571, 24320), (10912, 23560), (11780, 21824), (12160, 21142), (12958, 19840), (13376, 19220), (13640, 18848), (14080, 18259), (15376, 16720)]