19999390

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{48779}}^1$

素因数の和:48827

約数の個数: 16

約数和(自身を含む): 36877680

約数和(自身を除く): 16878290

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 48779, 97558, 243895, 487790, 1999939, 3999878, 9999695, 19999390]

約数ペア:

[(1, 19999390), (2, 9999695), (5, 3999878), (10, 1999939), (41, 487790), (82, 243895), (205, 97558), (410, 48779)]