21120988

素因数分解:

$2^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{3323}}^1$

素因数の和:3561

約数の個数: 24

約数和(自身を含む): 42440832

約数和(自身を除く): 21319844

約数列:

[1, 2, 4, 7, 14, 28, 227, 454, 908, 1589, 3178, 3323, 6356, 6646, 13292, 23261, 46522, 93044, 754321, 1508642, 3017284, 5280247, 10560494, 21120988]

約数ペア:

[(1, 21120988), (2, 10560494), (4, 5280247), (7, 3017284), (14, 1508642), (28, 754321), (227, 93044), (454, 46522), (908, 23261), (1589, 13292), (3178, 6646), (3323, 6356)]