840080

素因数分解:

$2^4\times 5^1\times {\mathrm{10501}}^1$

素因数の和:10514

約数の個数: 20

約数和(自身を含む): 1953372

約数和(自身を除く): 1113292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10501, 21002, 42004, 52505, 84008, 105010, 168016, 210020, 420040, 840080]

約数ペア:

[(1, 840080), (2, 420040), (4, 210020), (5, 168016), (8, 105010), (10, 84008), (16, 52505), (20, 42004), (40, 21002), (80, 10501)]