289945520

素因数分解:

$2^4\times 5^1\times {\mathrm{3624319}}^1$

素因数の和:3624332

約数の個数: 20

約数和(自身を含む): 674123520

約数和(自身を除く): 384178000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3624319, 7248638, 14497276, 18121595, 28994552, 36243190, 57989104, 72486380, 144972760, 289945520]

約数ペア:

[(1, 289945520), (2, 144972760), (4, 72486380), (5, 57989104), (8, 36243190), (10, 28994552), (16, 18121595), (20, 14497276), (40, 7248638), (80, 3624319)]