20697980

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{6197}}^1$

素因数の和:6373

約数の個数: 24

約数和(自身を含む): 43733088

約数和(自身を除く): 23035108

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 6197, 12394, 24788, 30985, 61970, 123940, 1034899, 2069798, 4139596, 5174495, 10348990, 20697980]

約数ペア:

[(1, 20697980), (2, 10348990), (4, 5174495), (5, 4139596), (10, 2069798), (20, 1034899), (167, 123940), (334, 61970), (668, 30985), (835, 24788), (1670, 12394), (3340, 6197)]