8204020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 19051200

約数和(自身を除く): 10847180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 419, 445, 838, 890, 979, 1676, 1780, 1958, 2095, 3916, 4190, 4609, 4895, 8380, 9218, 9790, 18436, 19580, 23045, 37291, 46090, 74582, 92180, 149164, 186455, 372910, 410201, 745820, 820402, 1640804, 2051005, 4102010, 8204020]

約数ペア:

[(1, 8204020), (2, 4102010), (4, 2051005), (5, 1640804), (10, 820402), (11, 745820), (20, 410201), (22, 372910), (44, 186455), (55, 149164), (89, 92180), (110, 74582), (178, 46090), (220, 37291), (356, 23045), (419, 19580), (445, 18436), (838, 9790), (890, 9218), (979, 8380), (1676, 4895), (1780, 4609), (1958, 4190), (2095, 3916)]