19648040

素因数分解:

$2^3\times 5^1\times {\mathrm{491201}}^1$

素因数の和:491212

約数の個数: 16

約数和(自身を含む): 44208180

約数和(自身を除く): 24560140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491201, 982402, 1964804, 2456005, 3929608, 4912010, 9824020, 19648040]

約数ペア:

[(1, 19648040), (2, 9824020), (4, 4912010), (5, 3929608), (8, 2456005), (10, 1964804), (20, 982402), (40, 491201)]