21279225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25793}}^1$

素因数の和:25817

約数の個数: 24

約数和(自身を含む): 38381472

約数和(自身を除く): 17102247

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25793, 77379, 128965, 283723, 386895, 644825, 851169, 1418615, 1934475, 4255845, 7093075, 21279225]

約数ペア:

[(1, 21279225), (3, 7093075), (5, 4255845), (11, 1934475), (15, 1418615), (25, 851169), (33, 644825), (55, 386895), (75, 283723), (165, 128965), (275, 77379), (825, 25793)]