80219620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{308537}}^1$

素因数の和:308559

約数の個数: 24

約数和(自身を含む): 181420344

約数和(自身を除く): 101200724

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 308537, 617074, 1234148, 1542685, 3085370, 4010981, 6170740, 8021962, 16043924, 20054905, 40109810, 80219620]

約数ペア:

[(1, 80219620), (2, 40109810), (4, 20054905), (5, 16043924), (10, 8021962), (13, 6170740), (20, 4010981), (26, 3085370), (52, 1542685), (65, 1234148), (130, 617074), (260, 308537)]