28777900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{7019}}^1$

素因数の和:7074

約数の個数: 36

約数和(自身を含む): 63980280

約数和(自身を除く): 35202380

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 7019, 14038, 28076, 35095, 70190, 140380, 175475, 287779, 350950, 575558, 701900, 1151116, 1438895, 2877790, 5755580, 7194475, 14388950, 28777900]

約数ペア:

[(1, 28777900), (2, 14388950), (4, 7194475), (5, 5755580), (10, 2877790), (20, 1438895), (25, 1151116), (41, 701900), (50, 575558), (82, 350950), (100, 287779), (164, 175475), (205, 140380), (410, 70190), (820, 35095), (1025, 28076), (2050, 14038), (4100, 7019)]