848020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 1801800

約数和(自身を除く): 953780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 389, 436, 545, 778, 1090, 1556, 1945, 2180, 3890, 7780, 42401, 84802, 169604, 212005, 424010, 848020]

約数ペア:

[(1, 848020), (2, 424010), (4, 212005), (5, 169604), (10, 84802), (20, 42401), (109, 7780), (218, 3890), (389, 2180), (436, 1945), (545, 1556), (778, 1090)]