20421429

素因数分解:

$3^1\times 7^1\times {\mathrm{619}}^1\times {\mathrm{1571}}^1$

素因数の和:2200

約数の個数: 16

約数和(自身を含む): 31188480

約数和(自身を除く): 10767051

約数列:

[1, 3, 7, 21, 619, 1571, 1857, 4333, 4713, 10997, 12999, 32991, 972449, 2917347, 6807143, 20421429]

約数ペア:

[(1, 20421429), (3, 6807143), (7, 2917347), (21, 972449), (619, 32991), (1571, 12999), (1857, 10997), (4333, 4713)]