1807200020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{689771}}^1$

素因数の和:689911

約数の個数: 24

約数和(自身を含む): 3824095968

約数和(自身を除く): 2016895948

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 689771, 1379542, 2759084, 3448855, 6897710, 13795420, 90360001, 180720002, 361440004, 451800005, 903600010, 1807200020]

約数ペア:

[(1, 1807200020), (2, 903600010), (4, 451800005), (5, 361440004), (10, 180720002), (20, 90360001), (131, 13795420), (262, 6897710), (524, 3448855), (655, 2759084), (1310, 1379542), (2620, 689771)]