138555728

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{211213}}^1$

素因数の和:211262

約数の個数: 20

約数和(自身を含む): 275000628

約数和(自身を除く): 136444900

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 211213, 422426, 844852, 1689704, 3379408, 8659733, 17319466, 34638932, 69277864, 138555728]

約数ペア:

[(1, 138555728), (2, 69277864), (4, 34638932), (8, 17319466), (16, 8659733), (41, 3379408), (82, 1689704), (164, 844852), (328, 422426), (656, 211213)]