18993849

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{12739}}^1$

素因数の和:12820

約数の個数: 16

約数和(自身を含む): 29352960

約数和(自身を除く): 10359111

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 12739, 38217, 89173, 267519, 904469, 2713407, 6331283, 18993849]

約数ペア:

[(1, 18993849), (3, 6331283), (7, 2713407), (21, 904469), (71, 267519), (213, 89173), (497, 38217), (1491, 12739)]