21353233

素因数分解:

${\mathrm{11}}^3\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:357

約数の個数: 16

約数和(自身を含む): 23962752

約数和(自身を除く): 2609519

約数列:

[1, 11, 61, 121, 263, 671, 1331, 2893, 7381, 16043, 31823, 81191, 176473, 350053, 1941203, 21353233]

約数ペア:

[(1, 21353233), (11, 1941203), (61, 350053), (121, 176473), (263, 81191), (671, 31823), (1331, 16043), (2893, 7381)]