21103438256

素因数分解:

$2^4\times {\mathrm{571}}^1\times {\mathrm{2309921}}^1$

素因数の和:2310500

約数の個数: 20

約数和(自身を含む): 40959536904

約数和(自身を除く): 19856098648

約数列:

[1, 2, 4, 8, 16, 571, 1142, 2284, 4568, 9136, 2309921, 4619842, 9239684, 18479368, 36958736, 1318964891, 2637929782, 5275859564, 10551719128, 21103438256]

約数ペア:

[(1, 21103438256), (2, 10551719128), (4, 5275859564), (8, 2637929782), (16, 1318964891), (571, 36958736), (1142, 18479368), (2284, 9239684), (4568, 4619842), (9136, 2309921)]