56910020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 122304000

約数和(自身を除く): 65393980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 181, 199, 316, 362, 395, 398, 724, 790, 796, 905, 995, 1580, 1810, 1990, 3620, 3980, 14299, 15721, 28598, 31442, 36019, 57196, 62884, 71495, 72038, 78605, 142990, 144076, 157210, 180095, 285980, 314420, 360190, 720380, 2845501, 5691002, 11382004, 14227505, 28455010, 56910020]

約数ペア:

[(1, 56910020), (2, 28455010), (4, 14227505), (5, 11382004), (10, 5691002), (20, 2845501), (79, 720380), (158, 360190), (181, 314420), (199, 285980), (316, 180095), (362, 157210), (395, 144076), (398, 142990), (724, 78605), (790, 72038), (796, 71495), (905, 62884), (995, 57196), (1580, 36019), (1810, 31442), (1990, 28598), (3620, 15721), (3980, 14299)]