1985980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{911}}^1$

素因数の和:1029

約数の個数: 24

約数和(自身を含む): 4213440

約数和(自身を除く): 2227460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 911, 1090, 1822, 2180, 3644, 4555, 9110, 18220, 99299, 198598, 397196, 496495, 992990, 1985980]

約数ペア:

[(1, 1985980), (2, 992990), (4, 496495), (5, 397196), (10, 198598), (20, 99299), (109, 18220), (218, 9110), (436, 4555), (545, 3644), (911, 2180), (1090, 1822)]