64905220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{53201}}^1$

素因数の和:53271

約数の個数: 24

約数和(自身を含む): 138538008

約数和(自身を除く): 73632788

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 53201, 106402, 212804, 266005, 532010, 1064020, 3245261, 6490522, 12981044, 16226305, 32452610, 64905220]

約数ペア:

[(1, 64905220), (2, 32452610), (4, 16226305), (5, 12981044), (10, 6490522), (20, 3245261), (61, 1064020), (122, 532010), (244, 266005), (305, 212804), (610, 106402), (1220, 53201)]