858887980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{215801}}^1$

素因数の和:216009

約数の個数: 24

約数和(自身を含む): 1812736800

約数和(自身を除く): 953848820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 215801, 431602, 863204, 1079005, 2158010, 4316020, 42944399, 85888798, 171777596, 214721995, 429443990, 858887980]

約数ペア:

[(1, 858887980), (2, 429443990), (4, 214721995), (5, 171777596), (10, 85888798), (20, 42944399), (199, 4316020), (398, 2158010), (796, 1079005), (995, 863204), (1990, 431602), (3980, 215801)]