643839

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 32

約数和(自身を含む): 1081344

約数和(自身を除く): 437505

約数列:

[1, 3, 7, 21, 23, 31, 43, 69, 93, 129, 161, 217, 301, 483, 651, 713, 903, 989, 1333, 2139, 2967, 3999, 4991, 6923, 9331, 14973, 20769, 27993, 30659, 91977, 214613, 643839]

約数ペア:

[(1, 643839), (3, 214613), (7, 91977), (21, 30659), (23, 27993), (31, 20769), (43, 14973), (69, 9331), (93, 6923), (129, 4991), (161, 3999), (217, 2967), (301, 2139), (483, 1333), (651, 989), (713, 903)]