390429

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:137

約数の個数: 24

約数和(自身を含む): 628992

約数和(自身を除く): 238563

約数列:

[1, 3, 9, 13, 39, 47, 71, 117, 141, 213, 423, 611, 639, 923, 1833, 2769, 3337, 5499, 8307, 10011, 30033, 43381, 130143, 390429]

約数ペア:

[(1, 390429), (3, 130143), (9, 43381), (13, 30033), (39, 10011), (47, 8307), (71, 5499), (117, 3337), (141, 2769), (213, 1833), (423, 923), (611, 639)]