90551380

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1\times {\mathrm{257}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 194181120

約数和(自身を除く): 103629740

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 223, 257, 316, 395, 446, 514, 790, 892, 1028, 1115, 1285, 1580, 2230, 2570, 4460, 5140, 17617, 20303, 35234, 40606, 57311, 70468, 81212, 88085, 101515, 114622, 176170, 203030, 229244, 286555, 352340, 406060, 573110, 1146220, 4527569, 9055138, 18110276, 22637845, 45275690, 90551380]

約数ペア:

[(1, 90551380), (2, 45275690), (4, 22637845), (5, 18110276), (10, 9055138), (20, 4527569), (79, 1146220), (158, 573110), (223, 406060), (257, 352340), (316, 286555), (395, 229244), (446, 203030), (514, 176170), (790, 114622), (892, 101515), (1028, 88085), (1115, 81212), (1285, 70468), (1580, 57311), (2230, 40606), (2570, 35234), (4460, 20303), (5140, 17617)]