31086640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:518

約数の個数: 80

約数和(自身を含む): 79119936

約数和(自身を除く): 48033296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 260, 284, 355, 421, 520, 568, 710, 842, 923, 1040, 1136, 1420, 1684, 1846, 2105, 2840, 3368, 3692, 4210, 4615, 5473, 5680, 6736, 7384, 8420, 9230, 10946, 14768, 16840, 18460, 21892, 27365, 29891, 33680, 36920, 43784, 54730, 59782, 73840, 87568, 109460, 119564, 149455, 218920, 239128, 298910, 388583, 437840, 478256, 597820, 777166, 1195640, 1554332, 1942915, 2391280, 3108664, 3885830, 6217328, 7771660, 15543320, 31086640]

約数ペア:

[(1, 31086640), (2, 15543320), (4, 7771660), (5, 6217328), (8, 3885830), (10, 3108664), (13, 2391280), (16, 1942915), (20, 1554332), (26, 1195640), (40, 777166), (52, 597820), (65, 478256), (71, 437840), (80, 388583), (104, 298910), (130, 239128), (142, 218920), (208, 149455), (260, 119564), (284, 109460), (355, 87568), (421, 73840), (520, 59782), (568, 54730), (710, 43784), (842, 36920), (923, 33680), (1040, 29891), (1136, 27365), (1420, 21892), (1684, 18460), (1846, 16840), (2105, 14768), (2840, 10946), (3368, 9230), (3692, 8420), (4210, 7384), (4615, 6736), (5473, 5680)]