21168287

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{379}}^1$

素因数の和:566

約数の個数: 16

約数和(自身を含む): 24806400

約数和(自身を除く): 3638113

約数列:

[1, 7, 79, 101, 379, 553, 707, 2653, 7979, 29941, 38279, 55853, 209587, 267953, 3024041, 21168287]

約数ペア:

[(1, 21168287), (7, 3024041), (79, 267953), (101, 209587), (379, 55853), (553, 38279), (707, 29941), (2653, 7979)]