77961580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1\times {\mathrm{337}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 168648480

約数和(自身を除く): 90686900

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 269, 337, 430, 538, 674, 860, 1076, 1345, 1348, 1685, 2690, 3370, 5380, 6740, 11567, 14491, 23134, 28982, 46268, 57835, 57964, 72455, 90653, 115670, 144910, 181306, 231340, 289820, 362612, 453265, 906530, 1813060, 3898079, 7796158, 15592316, 19490395, 38980790, 77961580]

約数ペア:

[(1, 77961580), (2, 38980790), (4, 19490395), (5, 15592316), (10, 7796158), (20, 3898079), (43, 1813060), (86, 906530), (172, 453265), (215, 362612), (269, 289820), (337, 231340), (430, 181306), (538, 144910), (674, 115670), (860, 90653), (1076, 72455), (1345, 57964), (1348, 57835), (1685, 46268), (2690, 28982), (3370, 23134), (5380, 14491), (6740, 11567)]