20099849

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 5755351

約数列:

[1, 7, 11, 49, 77, 89, 419, 539, 623, 979, 2933, 4361, 4609, 6853, 20531, 32263, 37291, 47971, 225841, 261037, 410201, 1827259, 2871407, 20099849]

約数ペア:

[(1, 20099849), (7, 2871407), (11, 1827259), (49, 410201), (77, 261037), (89, 225841), (419, 47971), (539, 37291), (623, 32263), (979, 20531), (2933, 6853), (4361, 4609)]