21480956

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{13003}}^1$

素因数の和:13073

約数の個数: 24

約数和(自身を含む): 43693440

約数和(自身を除く): 22212484

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1652, 13003, 26006, 52012, 91021, 182042, 364084, 767177, 1534354, 3068708, 5370239, 10740478, 21480956]

約数ペア:

[(1, 21480956), (2, 10740478), (4, 5370239), (7, 3068708), (14, 1534354), (28, 767177), (59, 364084), (118, 182042), (236, 91021), (413, 52012), (826, 26006), (1652, 13003)]