39899990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{5791}}^1$

素因数の和:5864

約数の個数: 32

約数和(自身を含む): 78817536

約数和(自身を除く): 38917546

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3445, 5791, 6890, 11582, 28955, 57910, 75283, 150566, 306923, 376415, 613846, 752830, 1534615, 3069230, 3989999, 7979998, 19949995, 39899990]

約数ペア:

[(1, 39899990), (2, 19949995), (5, 7979998), (10, 3989999), (13, 3069230), (26, 1534615), (53, 752830), (65, 613846), (106, 376415), (130, 306923), (265, 150566), (530, 75283), (689, 57910), (1378, 28955), (3445, 11582), (5791, 6890)]