18900895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 26046720

約数和(自身を除く): 7145825

約数列:

[1, 5, 13, 29, 37, 65, 145, 185, 271, 377, 481, 1073, 1355, 1885, 2405, 3523, 5365, 7859, 10027, 13949, 17615, 39295, 50135, 69745, 102167, 130351, 290783, 510835, 651755, 1453915, 3780179, 18900895]

約数ペア:

[(1, 18900895), (5, 3780179), (13, 1453915), (29, 651755), (37, 510835), (65, 290783), (145, 130351), (185, 102167), (271, 69745), (377, 50135), (481, 39295), (1073, 17615), (1355, 13949), (1885, 10027), (2405, 7859), (3523, 5365)]