640292401

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1\times {\mathrm{4447}}^1$

素因数の和:4828

約数の個数: 16

約数和(自身を含む): 745271296

約数和(自身を除く): 104978895

約数列:

[1, 7, 67, 307, 469, 2149, 4447, 20569, 31129, 143983, 297949, 1365229, 2085643, 9556603, 91470343, 640292401]

約数ペア:

[(1, 640292401), (7, 91470343), (67, 9556603), (307, 2085643), (469, 1365229), (2149, 297949), (4447, 143983), (20569, 31129)]