20511687

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13757}}^1$

素因数の和:13838

約数の個数: 16

約数和(自身を含む): 31698432

約数和(自身を除く): 11186745

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13757, 41271, 96299, 288897, 976747, 2930241, 6837229, 20511687]

約数ペア:

[(1, 20511687), (3, 6837229), (7, 2930241), (21, 976747), (71, 288897), (213, 96299), (497, 41271), (1491, 13757)]