80879620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{1787}}^1$

素因数の和:1900

約数の個数: 48

約数和(自身を含む): 177827328

約数和(自身を除く): 96947708

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 73, 124, 146, 155, 292, 310, 365, 620, 730, 1460, 1787, 2263, 3574, 4526, 7148, 8935, 9052, 11315, 17870, 22630, 35740, 45260, 55397, 110794, 130451, 221588, 260902, 276985, 521804, 553970, 652255, 1107940, 1304510, 2609020, 4043981, 8087962, 16175924, 20219905, 40439810, 80879620]

約数ペア:

[(1, 80879620), (2, 40439810), (4, 20219905), (5, 16175924), (10, 8087962), (20, 4043981), (31, 2609020), (62, 1304510), (73, 1107940), (124, 652255), (146, 553970), (155, 521804), (292, 276985), (310, 260902), (365, 221588), (620, 130451), (730, 110794), (1460, 55397), (1787, 45260), (2263, 35740), (3574, 22630), (4526, 17870), (7148, 11315), (8935, 9052)]