21044009

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{2621}}^1$

素因数の和:2696

約数の個数: 16

約数和(自身を含む): 25506816

約数和(自身を除く): 4462807

約数列:

[1, 7, 31, 37, 217, 259, 1147, 2621, 8029, 18347, 81251, 96977, 568757, 678839, 3006287, 21044009]

約数ペア:

[(1, 21044009), (7, 3006287), (31, 678839), (37, 568757), (217, 96977), (259, 81251), (1147, 18347), (2621, 8029)]