19409980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13669}}^1$

素因数の和:13749

約数の個数: 24

約数和(自身を含む): 41338080

約数和(自身を除く): 21928100

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13669, 27338, 54676, 68345, 136690, 273380, 970499, 1940998, 3881996, 4852495, 9704990, 19409980]

約数ペア:

[(1, 19409980), (2, 9704990), (4, 4852495), (5, 3881996), (10, 1940998), (20, 970499), (71, 273380), (142, 136690), (284, 68345), (355, 54676), (710, 27338), (1420, 13669)]