639450147

素因数分解:

$3^1\times 7^2\times {\mathrm{227}}^1\times {\mathrm{19163}}^1$

素因数の和:19407

約数の個数: 24

約数和(自身を含む): 996221376

約数和(自身を除く): 356771229

約数列:

[1, 3, 7, 21, 49, 147, 227, 681, 1589, 4767, 11123, 19163, 33369, 57489, 134141, 402423, 938987, 2816961, 4350001, 13050003, 30450007, 91350021, 213150049, 639450147]

約数ペア:

[(1, 639450147), (3, 213150049), (7, 91350021), (21, 30450007), (49, 13050003), (147, 4350001), (227, 2816961), (681, 938987), (1589, 402423), (4767, 134141), (11123, 57489), (19163, 33369)]