19860975

素因数分解:

$3^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{857}}^1$

素因数の和:976

約数の個数: 36

約数和(自身を含む): 35960496

約数和(自身を除く): 16099521

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 103, 225, 309, 515, 857, 927, 1545, 2571, 2575, 4285, 4635, 7713, 7725, 12855, 21425, 23175, 38565, 64275, 88271, 192825, 264813, 441355, 794439, 1324065, 2206775, 3972195, 6620325, 19860975]

約数ペア:

[(1, 19860975), (3, 6620325), (5, 3972195), (9, 2206775), (15, 1324065), (25, 794439), (45, 441355), (75, 264813), (103, 192825), (225, 88271), (309, 64275), (515, 38565), (857, 23175), (927, 21425), (1545, 12855), (2571, 7725), (2575, 7713), (4285, 4635)]