21267796

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5431}}^1$

素因数の和:5535

約数の個数: 24

約数和(自身を含む): 41065920

約数和(自身を除く): 19798124

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5431, 10862, 21724, 59741, 119482, 238964, 483359, 966718, 1933436, 5316949, 10633898, 21267796]

約数ペア:

[(1, 21267796), (2, 10633898), (4, 5316949), (11, 1933436), (22, 966718), (44, 483359), (89, 238964), (178, 119482), (356, 59741), (979, 21724), (1958, 10862), (3916, 5431)]