9780080

素因数分解:

$2^4\times 5^1\times {\mathrm{122251}}^1$

素因数の和:122264

約数の個数: 20

約数和(自身を含む): 22738872

約数和(自身を除く): 12958792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 122251, 244502, 489004, 611255, 978008, 1222510, 1956016, 2445020, 4890040, 9780080]

約数ペア:

[(1, 9780080), (2, 4890040), (4, 2445020), (5, 1956016), (8, 1222510), (10, 978008), (16, 611255), (20, 489004), (40, 244502), (80, 122251)]