18663940

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4111}}^1$

素因数の和:4347

約数の個数: 24

約数和(自身を含む): 39376512

約数和(自身を除く): 20712572

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4111, 4540, 8222, 16444, 20555, 41110, 82220, 933197, 1866394, 3732788, 4665985, 9331970, 18663940]

約数ペア:

[(1, 18663940), (2, 9331970), (4, 4665985), (5, 3732788), (10, 1866394), (20, 933197), (227, 82220), (454, 41110), (908, 20555), (1135, 16444), (2270, 8222), (4111, 4540)]