21053791

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:462

約数の個数: 16

約数和(自身を含む): 23689728

約数和(自身を除く): 2635937

約数列:

[1, 11, 47, 193, 211, 517, 2123, 2321, 9071, 9917, 40723, 99781, 109087, 447953, 1913981, 21053791]

約数ペア:

[(1, 21053791), (11, 1913981), (47, 447953), (193, 109087), (211, 99781), (517, 40723), (2123, 9917), (2321, 9071)]