20500809

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 32507904

約数和(自身を除く): 12007095

約数列:

[1, 3, 7, 21, 43, 73, 129, 219, 301, 311, 511, 903, 933, 1533, 2177, 3139, 6531, 9417, 13373, 21973, 22703, 40119, 65919, 68109, 93611, 158921, 280833, 476763, 976229, 2928687, 6833603, 20500809]

約数ペア:

[(1, 20500809), (3, 6833603), (7, 2928687), (21, 976229), (43, 476763), (73, 280833), (129, 158921), (219, 93611), (301, 68109), (311, 65919), (511, 40119), (903, 22703), (933, 21973), (1533, 13373), (2177, 9417), (3139, 6531)]