19787380

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13553}}^1$

素因数の和:13635

約数の個数: 24

約数和(自身を含む): 42125832

約数和(自身を除く): 22338452

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 13553, 27106, 54212, 67765, 135530, 271060, 989369, 1978738, 3957476, 4946845, 9893690, 19787380]

約数ペア:

[(1, 19787380), (2, 9893690), (4, 4946845), (5, 3957476), (10, 1978738), (20, 989369), (73, 271060), (146, 135530), (292, 67765), (365, 54212), (730, 27106), (1460, 13553)]