20785509

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1861}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 32242392

約数和(自身を除く): 11456883

約数列:

[1, 3, 9, 17, 51, 73, 153, 219, 657, 1241, 1861, 3723, 5583, 11169, 16749, 31637, 94911, 135853, 284733, 407559, 1222677, 2309501, 6928503, 20785509]

約数ペア:

[(1, 20785509), (3, 6928503), (9, 2309501), (17, 1222677), (51, 407559), (73, 284733), (153, 135853), (219, 94911), (657, 31637), (1241, 16749), (1861, 11169), (3723, 5583)]