20805764

素因数分解:

$2^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{4987}}^1$

素因数の和:5147

約数の個数: 24

約数和(自身を含む): 41899200

約数和(自身を除く): 21093436

約数列:

[1, 2, 4, 7, 14, 28, 149, 298, 596, 1043, 2086, 4172, 4987, 9974, 19948, 34909, 69818, 139636, 743063, 1486126, 2972252, 5201441, 10402882, 20805764]

約数ペア:

[(1, 20805764), (2, 10402882), (4, 5201441), (7, 2972252), (14, 1486126), (28, 743063), (149, 139636), (298, 69818), (596, 34909), (1043, 19948), (2086, 9974), (4172, 4987)]