21049765

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{3163}}^1$

素因数の和:3201

約数の個数: 16

約数和(自身を含む): 27792576

約数和(自身を除く): 6742811

約数列:

[1, 5, 11, 55, 121, 605, 1331, 3163, 6655, 15815, 34793, 173965, 382723, 1913615, 4209953, 21049765]

約数ペア:

[(1, 21049765), (5, 4209953), (11, 1913615), (55, 382723), (121, 173965), (605, 34793), (1331, 15815), (3163, 6655)]