16720880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19001}}^1$

素因数の和:19025

約数の個数: 40

約数和(自身を含む): 42412464

約数和(自身を除く): 25691584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 19001, 38002, 76004, 95005, 152008, 190010, 209011, 304016, 380020, 418022, 760040, 836044, 1045055, 1520080, 1672088, 2090110, 3344176, 4180220, 8360440, 16720880]

約数ペア:

[(1, 16720880), (2, 8360440), (4, 4180220), (5, 3344176), (8, 2090110), (10, 1672088), (11, 1520080), (16, 1045055), (20, 836044), (22, 760040), (40, 418022), (44, 380020), (55, 304016), (80, 209011), (88, 190010), (110, 152008), (176, 95005), (220, 76004), (440, 38002), (880, 19001)]