21481564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5659}}^1$

素因数の和:5749

約数の個数: 24

約数和(自身を含む): 41046320

約数和(自身を除く): 19564756

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5659, 11318, 22636, 73567, 147134, 294268, 413107, 826214, 1652428, 5370391, 10740782, 21481564]

約数ペア:

[(1, 21481564), (2, 10740782), (4, 5370391), (13, 1652428), (26, 826214), (52, 413107), (73, 294268), (146, 147134), (292, 73567), (949, 22636), (1898, 11318), (3796, 5659)]