391008080

素因数分解:

$2^4\times 5^1\times {\mathrm{4887601}}^1$

素因数の和:4887614

約数の個数: 20

約数和(自身を含む): 909093972

約数和(自身を除く): 518085892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4887601, 9775202, 19550404, 24438005, 39100808, 48876010, 78201616, 97752020, 195504040, 391008080]

約数ペア:

[(1, 391008080), (2, 195504040), (4, 97752020), (5, 78201616), (8, 48876010), (10, 39100808), (16, 24438005), (20, 19550404), (40, 9775202), (80, 4887601)]