20351247

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{15887}}^1$

素因数の和:15958

約数の個数: 16

約数和(自身を含む): 31521792

約数和(自身を除く): 11170545

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 15887, 47661, 111209, 333627, 969107, 2907321, 6783749, 20351247]

約数ペア:

[(1, 20351247), (3, 6783749), (7, 2907321), (21, 969107), (61, 333627), (183, 111209), (427, 47661), (1281, 15887)]