19988254370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{285546491}}^1$

素因数の和:285546505

約数の個数: 16

約数和(自身を含む): 41118694848

約数和(自身を除く): 21130440478

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 285546491, 571092982, 1427732455, 1998825437, 2855464910, 3997650874, 9994127185, 19988254370]

約数ペア:

[(1, 19988254370), (2, 9994127185), (5, 3997650874), (7, 2855464910), (10, 1998825437), (14, 1427732455), (35, 571092982), (70, 285546491)]