21087700

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{3457}}^1$

素因数の和:3532

約数の個数: 36

約数和(自身を含む): 46523932

約数和(自身を除く): 25436232

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 3457, 6100, 6914, 13828, 17285, 34570, 69140, 86425, 172850, 210877, 345700, 421754, 843508, 1054385, 2108770, 4217540, 5271925, 10543850, 21087700]

約数ペア:

[(1, 21087700), (2, 10543850), (4, 5271925), (5, 4217540), (10, 2108770), (20, 1054385), (25, 843508), (50, 421754), (61, 345700), (100, 210877), (122, 172850), (244, 86425), (305, 69140), (610, 34570), (1220, 17285), (1525, 13828), (3050, 6914), (3457, 6100)]