20788271

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 24591168

約数和(自身を除く): 3802897

約数列:

[1, 7, 41, 113, 287, 641, 791, 4487, 4633, 26281, 32431, 72433, 183967, 507031, 2969753, 20788271]

約数ペア:

[(1, 20788271), (7, 2969753), (41, 507031), (113, 183967), (287, 72433), (641, 32431), (791, 26281), (4487, 4633)]