221120080

素因数分解:

$2^4\times 5^1\times {\mathrm{2764001}}^1$

素因数の和:2764014

約数の個数: 20

約数和(自身を含む): 514104372

約数和(自身を除く): 292984292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2764001, 5528002, 11056004, 13820005, 22112008, 27640010, 44224016, 55280020, 110560040, 221120080]

約数ペア:

[(1, 221120080), (2, 110560040), (4, 55280020), (5, 44224016), (8, 27640010), (10, 22112008), (16, 13820005), (20, 11056004), (40, 5528002), (80, 2764001)]