21212401

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1459}}^1$

素因数の和:1564

約数の個数: 16

約数和(自身を含む): 25415680

約数和(自身を除く): 4203279

約数列:

[1, 7, 31, 67, 217, 469, 1459, 2077, 10213, 14539, 45229, 97753, 316603, 684271, 3030343, 21212401]

約数ペア:

[(1, 21212401), (7, 3030343), (31, 684271), (67, 316603), (217, 97753), (469, 45229), (1459, 14539), (2077, 10213)]