81517900

素因数分解:

$2^2\times 5^2\times {\mathrm{149}}^1\times {\mathrm{5471}}^1$

素因数の和:5634

約数の個数: 36

約数和(自身を含む): 178113600

約数和(自身を除く): 96595700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 149, 298, 596, 745, 1490, 2980, 3725, 5471, 7450, 10942, 14900, 21884, 27355, 54710, 109420, 136775, 273550, 547100, 815179, 1630358, 3260716, 4075895, 8151790, 16303580, 20379475, 40758950, 81517900]

約数ペア:

[(1, 81517900), (2, 40758950), (4, 20379475), (5, 16303580), (10, 8151790), (20, 4075895), (25, 3260716), (50, 1630358), (100, 815179), (149, 547100), (298, 273550), (596, 136775), (745, 109420), (1490, 54710), (2980, 27355), (3725, 21884), (5471, 14900), (7450, 10942)]