87665980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{43399}}^1$

素因数の和:43509

約数の個数: 24

約数和(自身を含む): 185925600

約数和(自身を除く): 98259620

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 43399, 86798, 173596, 216995, 433990, 867980, 4383299, 8766598, 17533196, 21916495, 43832990, 87665980]

約数ペア:

[(1, 87665980), (2, 43832990), (4, 21916495), (5, 17533196), (10, 8766598), (20, 4383299), (101, 867980), (202, 433990), (404, 216995), (505, 173596), (1010, 86798), (2020, 43399)]