91615780

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 195894720

約数和(自身を除く): 104278940

約数列:

[1, 2, 4, 5, 10, 20, 157, 163, 179, 314, 326, 358, 628, 652, 716, 785, 815, 895, 1570, 1630, 1790, 3140, 3260, 3580, 25591, 28103, 29177, 51182, 56206, 58354, 102364, 112412, 116708, 127955, 140515, 145885, 255910, 281030, 291770, 511820, 562060, 583540, 4580789, 9161578, 18323156, 22903945, 45807890, 91615780]

約数ペア:

[(1, 91615780), (2, 45807890), (4, 22903945), (5, 18323156), (10, 9161578), (20, 4580789), (157, 583540), (163, 562060), (179, 511820), (314, 291770), (326, 281030), (358, 255910), (628, 145885), (652, 140515), (716, 127955), (785, 116708), (815, 112412), (895, 102364), (1570, 58354), (1630, 56206), (1790, 51182), (3140, 29177), (3260, 28103), (3580, 25591)]