20819986

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{227}}^1\times {\mathrm{379}}^1$

素因数の和:630

約数の個数: 24

約数和(自身を含む): 34569360

約数和(自身を除く): 13749374

約数列:

[1, 2, 11, 22, 121, 227, 242, 379, 454, 758, 2497, 4169, 4994, 8338, 27467, 45859, 54934, 86033, 91718, 172066, 946363, 1892726, 10409993, 20819986]

約数ペア:

[(1, 20819986), (2, 10409993), (11, 1892726), (22, 946363), (121, 172066), (227, 91718), (242, 86033), (379, 54934), (454, 45859), (758, 27467), (2497, 8338), (4169, 4994)]