21041391

素因数分解:

$3^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{8867}}^1$

素因数の和:8990

約数の個数: 16

約数和(自身を含む): 32350464

約数和(自身を除く): 11309073

約数列:

[1, 3, 7, 21, 113, 339, 791, 2373, 8867, 26601, 62069, 186207, 1001971, 3005913, 7013797, 21041391]

約数ペア:

[(1, 21041391), (3, 7013797), (7, 3005913), (21, 1001971), (113, 186207), (339, 62069), (791, 26601), (2373, 8867)]