21207290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4409}}^1$

素因数の和:4466

約数の個数: 32

約数和(自身を含む): 42230160

約数和(自身を除く): 21022870

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4409, 4810, 8818, 22045, 44090, 57317, 114634, 163133, 286585, 326266, 573170, 815665, 1631330, 2120729, 4241458, 10603645, 21207290]

約数ペア:

[(1, 21207290), (2, 10603645), (5, 4241458), (10, 2120729), (13, 1631330), (26, 815665), (37, 573170), (65, 326266), (74, 286585), (130, 163133), (185, 114634), (370, 57317), (481, 44090), (962, 22045), (2405, 8818), (4409, 4810)]