21308063

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1061}}^1$

素因数の和:1238

約数の個数: 16

約数和(自身を含む): 25827840

約数和(自身を除く): 4519777

約数列:

[1, 7, 19, 133, 151, 1057, 1061, 2869, 7427, 20083, 20159, 141113, 160211, 1121477, 3044009, 21308063]

約数ペア:

[(1, 21308063), (7, 3044009), (19, 1121477), (133, 160211), (151, 141113), (1057, 20159), (1061, 20083), (2869, 7427)]