400500920

素因数分解:

$2^3\times 5^1\times {\mathrm{10012523}}^1$

素因数の和:10012534

約数の個数: 16

約数和(自身を含む): 901127160

約数和(自身を除く): 500626240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10012523, 20025046, 40050092, 50062615, 80100184, 100125230, 200250460, 400500920]

約数ペア:

[(1, 400500920), (2, 200250460), (4, 100125230), (5, 80100184), (8, 50062615), (10, 40050092), (20, 20025046), (40, 10012523)]