20884890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53551}}^1$

素因数の和:53574

約数の個数: 32

約数和(自身を含む): 53980416

約数和(自身を除く): 33095526

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53551, 107102, 160653, 267755, 321306, 535510, 696163, 803265, 1392326, 1606530, 2088489, 3480815, 4176978, 6961630, 10442445, 20884890]

約数ペア:

[(1, 20884890), (2, 10442445), (3, 6961630), (5, 4176978), (6, 3480815), (10, 2088489), (13, 1606530), (15, 1392326), (26, 803265), (30, 696163), (39, 535510), (65, 321306), (78, 267755), (130, 160653), (195, 107102), (390, 53551)]