21511268

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14897}}^1$

素因数の和:14939

約数の個数: 18

約数和(自身を含む): 39732966

約数和(自身を除く): 18221698

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14897, 29794, 59588, 283043, 566086, 1132172, 5377817, 10755634, 21511268]

約数ペア:

[(1, 21511268), (2, 10755634), (4, 5377817), (19, 1132172), (38, 566086), (76, 283043), (361, 59588), (722, 29794), (1444, 14897)]