18740631

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3613}}^1$

素因数の和:3655

約数の個数: 32

約数和(自身を含む): 32381440

約数和(自身を除く): 13640809

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 3613, 5187, 10839, 25291, 46969, 68647, 75873, 140907, 205941, 328783, 480529, 892411, 986349, 1441587, 2677233, 6246877, 18740631]

約数ペア:

[(1, 18740631), (3, 6246877), (7, 2677233), (13, 1441587), (19, 986349), (21, 892411), (39, 480529), (57, 328783), (91, 205941), (133, 140907), (247, 75873), (273, 68647), (399, 46969), (741, 25291), (1729, 10839), (3613, 5187)]