90912520

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5557}}^1$

素因数の和:5977

約数の個数: 32

約数和(自身を含む): 205090200

約数和(自身を除く): 114177680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 5557, 8180, 11114, 16360, 22228, 27785, 44456, 55570, 111140, 222280, 2272813, 4545626, 9091252, 11364065, 18182504, 22728130, 45456260, 90912520]

約数ペア:

[(1, 90912520), (2, 45456260), (4, 22728130), (5, 18182504), (8, 11364065), (10, 9091252), (20, 4545626), (40, 2272813), (409, 222280), (818, 111140), (1636, 55570), (2045, 44456), (3272, 27785), (4090, 22228), (5557, 16360), (8180, 11114)]