18875350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:505

約数の個数: 48

約数和(自身を含む): 38435040

約数和(自身を除く): 19559690

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 71, 130, 142, 325, 355, 409, 650, 710, 818, 923, 1775, 1846, 2045, 3550, 4090, 4615, 5317, 9230, 10225, 10634, 20450, 23075, 26585, 29039, 46150, 53170, 58078, 132925, 145195, 265850, 290390, 377507, 725975, 755014, 1451950, 1887535, 3775070, 9437675, 18875350]

約数ペア:

[(1, 18875350), (2, 9437675), (5, 3775070), (10, 1887535), (13, 1451950), (25, 755014), (26, 725975), (50, 377507), (65, 290390), (71, 265850), (130, 145195), (142, 132925), (325, 58078), (355, 53170), (409, 46150), (650, 29039), (710, 26585), (818, 23075), (923, 20450), (1775, 10634), (1846, 10225), (2045, 9230), (3550, 5317), (4090, 4615)]