55977820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 120960000

約数和(自身を除く): 64982180

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 284, 316, 355, 395, 499, 710, 790, 998, 1420, 1580, 1996, 2495, 4990, 5609, 9980, 11218, 22436, 28045, 35429, 39421, 56090, 70858, 78842, 112180, 141716, 157684, 177145, 197105, 354290, 394210, 708580, 788420, 2798891, 5597782, 11195564, 13994455, 27988910, 55977820]

約数ペア:

[(1, 55977820), (2, 27988910), (4, 13994455), (5, 11195564), (10, 5597782), (20, 2798891), (71, 788420), (79, 708580), (142, 394210), (158, 354290), (284, 197105), (316, 177145), (355, 157684), (395, 141716), (499, 112180), (710, 78842), (790, 70858), (998, 56090), (1420, 39421), (1580, 35429), (1996, 28045), (2495, 22436), (4990, 11218), (5609, 9980)]