917780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 1949640

約数和(自身を除く): 1031860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 421, 436, 545, 842, 1090, 1684, 2105, 2180, 4210, 8420, 45889, 91778, 183556, 229445, 458890, 917780]

約数ペア:

[(1, 917780), (2, 458890), (4, 229445), (5, 183556), (10, 91778), (20, 45889), (109, 8420), (218, 4210), (421, 2180), (436, 2105), (545, 1684), (842, 1090)]