15909920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7649}}^1$

素因数の和:7677

約数の個数: 48

約数和(自身を含む): 40483800

約数和(自身を除く): 24573880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 7649, 15298, 30596, 38245, 61192, 76490, 99437, 122384, 152980, 198874, 244768, 305960, 397748, 497185, 611920, 795496, 994370, 1223840, 1590992, 1988740, 3181984, 3977480, 7954960, 15909920]

約数ペア:

[(1, 15909920), (2, 7954960), (4, 3977480), (5, 3181984), (8, 1988740), (10, 1590992), (13, 1223840), (16, 994370), (20, 795496), (26, 611920), (32, 497185), (40, 397748), (52, 305960), (65, 244768), (80, 198874), (104, 152980), (130, 122384), (160, 99437), (208, 76490), (260, 61192), (416, 38245), (520, 30596), (1040, 15298), (2080, 7649)]