87891830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:561

約数の個数: 48

約数和(自身を含む): 173053584

約数和(自身を除く): 85161754

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 169, 262, 338, 397, 655, 794, 845, 1310, 1690, 1703, 1985, 3406, 3970, 5161, 8515, 10322, 17030, 22139, 25805, 44278, 51610, 52007, 67093, 104014, 110695, 134186, 221390, 260035, 335465, 520070, 670930, 676091, 1352182, 3380455, 6760910, 8789183, 17578366, 43945915, 87891830]

約数ペア:

[(1, 87891830), (2, 43945915), (5, 17578366), (10, 8789183), (13, 6760910), (26, 3380455), (65, 1352182), (130, 676091), (131, 670930), (169, 520070), (262, 335465), (338, 260035), (397, 221390), (655, 134186), (794, 110695), (845, 104014), (1310, 67093), (1690, 52007), (1703, 51610), (1985, 44278), (3406, 25805), (3970, 22139), (5161, 17030), (8515, 10322)]