640097919

素因数分解:

$3^2\times {\mathrm{139}}^1\times {\mathrm{511669}}^1$

素因数の和:511814

約数の個数: 12

約数和(自身を含む): 931239400

約数和(自身を除く): 291141481

約数列:

[1, 3, 9, 139, 417, 1251, 511669, 1535007, 4605021, 71121991, 213365973, 640097919]

約数ペア:

[(1, 640097919), (3, 213365973), (9, 71121991), (139, 4605021), (417, 1535007), (1251, 511669)]