20120899154

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{639937}}^1$

素因数の和:640217

約数の個数: 16

約数和(自身を含む): 30717024000

約数和(自身を除く): 10596124846

約数列:

[1, 2, 79, 158, 199, 398, 15721, 31442, 639937, 1279874, 50555023, 101110046, 127347463, 254694926, 10060449577, 20120899154]

約数ペア:

[(1, 20120899154), (2, 10060449577), (79, 254694926), (158, 127347463), (199, 101110046), (398, 50555023), (15721, 1279874), (31442, 639937)]