31879280

素因数分解:

$2^4\times 5^1\times {\mathrm{398491}}^1$

素因数の和:398504

約数の個数: 20

約数和(自身を含む): 74119512

約数和(自身を除く): 42240232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 398491, 796982, 1593964, 1992455, 3187928, 3984910, 6375856, 7969820, 15939640, 31879280]

約数ペア:

[(1, 31879280), (2, 15939640), (4, 7969820), (5, 6375856), (8, 3984910), (10, 3187928), (16, 1992455), (20, 1593964), (40, 796982), (80, 398491)]