129240080

素因数分解:

$2^4\times 5^1\times {\mathrm{1615501}}^1$

素因数の和:1615514

約数の個数: 20

約数和(自身を含む): 300483372

約数和(自身を除く): 171243292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1615501, 3231002, 6462004, 8077505, 12924008, 16155010, 25848016, 32310020, 64620040, 129240080]

約数ペア:

[(1, 129240080), (2, 64620040), (4, 32310020), (5, 25848016), (8, 16155010), (10, 12924008), (16, 8077505), (20, 6462004), (40, 3231002), (80, 1615501)]