19782370

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{3797}}^1$

素因数の和:4325

約数の個数: 16

約数和(自身を含む): 35686008

約数和(自身を除く): 15903638

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 3797, 5210, 7594, 18985, 37970, 1978237, 3956474, 9891185, 19782370]

約数ペア:

[(1, 19782370), (2, 9891185), (5, 3956474), (10, 1978237), (521, 37970), (1042, 18985), (2605, 7594), (3797, 5210)]