31580680

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{7817}}^1$

素因数の和:7929

約数の個数: 32

約数和(自身を含む): 71769240

約数和(自身を除く): 40188560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 7817, 15634, 31268, 39085, 62536, 78170, 156340, 312680, 789517, 1579034, 3158068, 3947585, 6316136, 7895170, 15790340, 31580680]

約数ペア:

[(1, 31580680), (2, 15790340), (4, 7895170), (5, 6316136), (8, 3947585), (10, 3158068), (20, 1579034), (40, 789517), (101, 312680), (202, 156340), (404, 78170), (505, 62536), (808, 39085), (1010, 31268), (2020, 15634), (4040, 7817)]