20285145

素因数分解:

$3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1277}}^1$

素因数の和:1641

約数の個数: 24

約数和(自身を含む): 35288136

約数和(自身を除く): 15002991

約数列:

[1, 3, 5, 9, 15, 45, 353, 1059, 1277, 1765, 3177, 3831, 5295, 6385, 11493, 15885, 19155, 57465, 450781, 1352343, 2253905, 4057029, 6761715, 20285145]

約数ペア:

[(1, 20285145), (3, 6761715), (5, 4057029), (9, 2253905), (15, 1352343), (45, 450781), (353, 57465), (1059, 19155), (1277, 15885), (1765, 11493), (3177, 6385), (3831, 5295)]