19928883

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{8377}}^1$

素因数の和:8454

約数の個数: 16

約数和(自身を含む): 29088416

約数和(自身を除く): 9159533

約数列:

[1, 3, 13, 39, 61, 183, 793, 2379, 8377, 25131, 108901, 326703, 510997, 1532991, 6642961, 19928883]

約数ペア:

[(1, 19928883), (3, 6642961), (13, 1532991), (39, 510997), (61, 326703), (183, 108901), (793, 25131), (2379, 8377)]