20080011

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 32209408

約数和(自身を除く): 12129397

約数列:

[1, 3, 7, 21, 37, 43, 111, 129, 259, 301, 601, 777, 903, 1591, 1803, 4207, 4773, 11137, 12621, 22237, 25843, 33411, 66711, 77529, 155659, 180901, 466977, 542703, 956191, 2868573, 6693337, 20080011]

約数ペア:

[(1, 20080011), (3, 6693337), (7, 2868573), (21, 956191), (37, 542703), (43, 466977), (111, 180901), (129, 155659), (259, 77529), (301, 66711), (601, 33411), (777, 25843), (903, 22237), (1591, 12621), (1803, 11137), (4207, 4773)]