21786215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{3119}}^1$

素因数の和:3262

約数の個数: 16

約数和(自身を含む): 28753920

約数和(自身を除く): 6967705

約数列:

[1, 5, 11, 55, 127, 635, 1397, 3119, 6985, 15595, 34309, 171545, 396113, 1980565, 4357243, 21786215]

約数ペア:

[(1, 21786215), (5, 4357243), (11, 1980565), (55, 396113), (127, 171545), (635, 34309), (1397, 15595), (3119, 6985)]