81886840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1019}}^1$

素因数の和:1085

約数の個数: 96

約数和(自身を含む): 219769200

約数和(自身を除く): 137882360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 245, 280, 287, 328, 392, 410, 490, 574, 820, 980, 1019, 1148, 1435, 1640, 1960, 2009, 2038, 2296, 2870, 4018, 4076, 5095, 5740, 7133, 8036, 8152, 10045, 10190, 11480, 14266, 16072, 20090, 20380, 28532, 35665, 40180, 40760, 41779, 49931, 57064, 71330, 80360, 83558, 99862, 142660, 167116, 199724, 208895, 249655, 285320, 292453, 334232, 399448, 417790, 499310, 584906, 835580, 998620, 1169812, 1462265, 1671160, 1997240, 2047171, 2339624, 2924530, 4094342, 5849060, 8188684, 10235855, 11698120, 16377368, 20471710, 40943420, 81886840]

約数ペア:

[(1, 81886840), (2, 40943420), (4, 20471710), (5, 16377368), (7, 11698120), (8, 10235855), (10, 8188684), (14, 5849060), (20, 4094342), (28, 2924530), (35, 2339624), (40, 2047171), (41, 1997240), (49, 1671160), (56, 1462265), (70, 1169812), (82, 998620), (98, 835580), (140, 584906), (164, 499310), (196, 417790), (205, 399448), (245, 334232), (280, 292453), (287, 285320), (328, 249655), (392, 208895), (410, 199724), (490, 167116), (574, 142660), (820, 99862), (980, 83558), (1019, 80360), (1148, 71330), (1435, 57064), (1640, 49931), (1960, 41779), (2009, 40760), (2038, 40180), (2296, 35665), (2870, 28532), (4018, 20380), (4076, 20090), (5095, 16072), (5740, 14266), (7133, 11480), (8036, 10190), (8152, 10045)]