20291313

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1$

素因数の和:1053

約数の個数: 32

約数和(自身を含む): 33048576

約数和(自身を除く): 12757263

約数列:

[1, 3, 7, 21, 23, 43, 69, 129, 161, 301, 483, 903, 977, 989, 2931, 2967, 6839, 6923, 20517, 20769, 22471, 42011, 67413, 126033, 157297, 294077, 471891, 882231, 966253, 2898759, 6763771, 20291313]

約数ペア:

[(1, 20291313), (3, 6763771), (7, 2898759), (21, 966253), (23, 882231), (43, 471891), (69, 294077), (129, 157297), (161, 126033), (301, 67413), (483, 42011), (903, 22471), (977, 20769), (989, 20517), (2931, 6923), (2967, 6839)]