20806957701

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{439}}^1\times {\mathrm{3727}}^1$

素因数の和:4335

約数の個数: 40

約数和(自身を含む): 31359637760

約数和(自身を除く): 10552680059

約数列:

[1, 3, 9, 27, 81, 157, 439, 471, 1317, 1413, 3727, 3951, 4239, 11181, 11853, 12717, 33543, 35559, 68923, 100629, 206769, 301887, 585139, 620307, 1636153, 1755417, 1860921, 4908459, 5266251, 5582763, 14725377, 15798753, 44176131, 47396259, 132528393, 256876021, 770628063, 2311884189, 6935652567, 20806957701]

約数ペア:

[(1, 20806957701), (3, 6935652567), (9, 2311884189), (27, 770628063), (81, 256876021), (157, 132528393), (439, 47396259), (471, 44176131), (1317, 15798753), (1413, 14725377), (3727, 5582763), (3951, 5266251), (4239, 4908459), (11181, 1860921), (11853, 1755417), (12717, 1636153), (33543, 620307), (35559, 585139), (68923, 301887), (100629, 206769)]