20557136

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{12721}}^1$

素因数の和:12830

約数の個数: 20

約数和(自身を含む): 40226964

約数和(自身を除く): 19669828

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 12721, 25442, 50884, 101768, 203536, 1284821, 2569642, 5139284, 10278568, 20557136]

約数ペア:

[(1, 20557136), (2, 10278568), (4, 5139284), (8, 2569642), (16, 1284821), (101, 203536), (202, 101768), (404, 50884), (808, 25442), (1616, 12721)]