20287480

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1831}}^1$

素因数の和:2119

約数の個数: 32

約数和(自身を含む): 45836640

約数和(自身を除く): 25549160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 1831, 2216, 2770, 3662, 5540, 7324, 9155, 11080, 14648, 18310, 36620, 73240, 507187, 1014374, 2028748, 2535935, 4057496, 5071870, 10143740, 20287480]

約数ペア:

[(1, 20287480), (2, 10143740), (4, 5071870), (5, 4057496), (8, 2535935), (10, 2028748), (20, 1014374), (40, 507187), (277, 73240), (554, 36620), (1108, 18310), (1385, 14648), (1831, 11080), (2216, 9155), (2770, 7324), (3662, 5540)]