420835540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{678767}}^1$

素因数の和:678807

約数の個数: 24

約数和(自身を含む): 912264192

約数和(自身を除く): 491428652

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 678767, 1357534, 2715068, 3393835, 6787670, 13575340, 21041777, 42083554, 84167108, 105208885, 210417770, 420835540]

約数ペア:

[(1, 420835540), (2, 210417770), (4, 105208885), (5, 84167108), (10, 42083554), (20, 21041777), (31, 13575340), (62, 6787670), (124, 3393835), (155, 2715068), (310, 1357534), (620, 678767)]