261286480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1889}}^1$

素因数の和:1941

約数の個数: 160

約数和(自身を含む): 787449600

約数和(自身を除く): 526163120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 80, 91, 95, 104, 112, 130, 133, 140, 152, 182, 190, 208, 247, 260, 266, 280, 304, 364, 380, 455, 494, 520, 532, 560, 665, 728, 760, 910, 988, 1040, 1064, 1235, 1330, 1456, 1520, 1729, 1820, 1889, 1976, 2128, 2470, 2660, 3458, 3640, 3778, 3952, 4940, 5320, 6916, 7280, 7556, 8645, 9445, 9880, 10640, 13223, 13832, 15112, 17290, 18890, 19760, 24557, 26446, 27664, 30224, 34580, 35891, 37780, 49114, 52892, 66115, 69160, 71782, 75560, 98228, 105784, 122785, 132230, 138320, 143564, 151120, 171899, 179455, 196456, 211568, 245570, 251237, 264460, 287128, 343798, 358910, 392912, 466583, 491140, 502474, 528920, 574256, 687596, 717820, 859495, 933166, 982280, 1004948, 1057840, 1256185, 1375192, 1435640, 1718990, 1866332, 1964560, 2009896, 2332915, 2512370, 2750384, 2871280, 3266081, 3437980, 3732664, 4019792, 4665830, 5024740, 6532162, 6875960, 7465328, 9331660, 10049480, 13064324, 13751920, 16330405, 18663320, 20098960, 26128648, 32660810, 37326640, 52257296, 65321620, 130643240, 261286480]

約数ペア:

[(1, 261286480), (2, 130643240), (4, 65321620), (5, 52257296), (7, 37326640), (8, 32660810), (10, 26128648), (13, 20098960), (14, 18663320), (16, 16330405), (19, 13751920), (20, 13064324), (26, 10049480), (28, 9331660), (35, 7465328), (38, 6875960), (40, 6532162), (52, 5024740), (56, 4665830), (65, 4019792), (70, 3732664), (76, 3437980), (80, 3266081), (91, 2871280), (95, 2750384), (104, 2512370), (112, 2332915), (130, 2009896), (133, 1964560), (140, 1866332), (152, 1718990), (182, 1435640), (190, 1375192), (208, 1256185), (247, 1057840), (260, 1004948), (266, 982280), (280, 933166), (304, 859495), (364, 717820), (380, 687596), (455, 574256), (494, 528920), (520, 502474), (532, 491140), (560, 466583), (665, 392912), (728, 358910), (760, 343798), (910, 287128), (988, 264460), (1040, 251237), (1064, 245570), (1235, 211568), (1330, 196456), (1456, 179455), (1520, 171899), (1729, 151120), (1820, 143564), (1889, 138320), (1976, 132230), (2128, 122785), (2470, 105784), (2660, 98228), (3458, 75560), (3640, 71782), (3778, 69160), (3952, 66115), (4940, 52892), (5320, 49114), (6916, 37780), (7280, 35891), (7556, 34580), (8645, 30224), (9445, 27664), (9880, 26446), (10640, 24557), (13223, 19760), (13832, 18890), (15112, 17290)]