18208775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 24529680

約数和(自身を除く): 6320905

約数列:

[1, 5, 13, 25, 65, 179, 313, 325, 895, 1565, 2327, 4069, 4475, 7825, 11635, 20345, 56027, 58175, 101725, 280135, 728351, 1400675, 3641755, 18208775]

約数ペア:

[(1, 18208775), (5, 3641755), (13, 1400675), (25, 728351), (65, 280135), (179, 101725), (313, 58175), (325, 56027), (895, 20345), (1565, 11635), (2327, 7825), (4069, 4475)]