12990980

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1409}}^1$

素因数の和:1879

約数の個数: 24

約数和(自身を含む): 27359640

約数和(自身を除く): 14368660

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1409, 1844, 2305, 2818, 4610, 5636, 7045, 9220, 14090, 28180, 649549, 1299098, 2598196, 3247745, 6495490, 12990980]

約数ペア:

[(1, 12990980), (2, 6495490), (4, 3247745), (5, 2598196), (10, 1299098), (20, 649549), (461, 28180), (922, 14090), (1409, 9220), (1844, 7045), (2305, 5636), (2818, 4610)]