21628873

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{431}}^1$

素因数の和:612

約数の個数: 16

約数和(自身を含む): 25380864

約数和(自身を除く): 3751991

約数列:

[1, 7, 67, 107, 431, 469, 749, 3017, 7169, 28877, 46117, 50183, 202139, 322819, 3089839, 21628873]

約数ペア:

[(1, 21628873), (7, 3089839), (67, 322819), (107, 202139), (431, 50183), (469, 46117), (749, 28877), (3017, 7169)]