9942980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4561}}^1$

素因数の和:4679

約数の個数: 24

約数和(自身を含む): 21076440

約数和(自身を除く): 11133460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 4561, 9122, 18244, 22805, 45610, 91220, 497149, 994298, 1988596, 2485745, 4971490, 9942980]

約数ペア:

[(1, 9942980), (2, 4971490), (4, 2485745), (5, 1988596), (10, 994298), (20, 497149), (109, 91220), (218, 45610), (436, 22805), (545, 18244), (1090, 9122), (2180, 4561)]