21579131

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1\times {\mathrm{359}}^1$

素因数の和:674

約数の個数: 16

約数和(自身を含む): 25620480

約数和(自身を除く): 4041349

約数列:

[1, 7, 31, 217, 277, 359, 1939, 2513, 8587, 11129, 60109, 77903, 99443, 696101, 3082733, 21579131]

約数ペア:

[(1, 21579131), (7, 3082733), (31, 696101), (217, 99443), (277, 77903), (359, 60109), (1939, 11129), (2513, 8587)]