20881144

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{601}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 40526640

約数和(自身を除く): 19645496

約数列:

[1, 2, 4, 8, 43, 86, 101, 172, 202, 344, 404, 601, 808, 1202, 2404, 4343, 4808, 8686, 17372, 25843, 34744, 51686, 60701, 103372, 121402, 206744, 242804, 485608, 2610143, 5220286, 10440572, 20881144]

約数ペア:

[(1, 20881144), (2, 10440572), (4, 5220286), (8, 2610143), (43, 485608), (86, 242804), (101, 206744), (172, 121402), (202, 103372), (344, 60701), (404, 51686), (601, 34744), (808, 25843), (1202, 17372), (2404, 8686), (4343, 4808)]