19991395

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{863}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 4829597

約数列:

[1, 5, 41, 113, 205, 565, 863, 4315, 4633, 23165, 35383, 97519, 176915, 487595, 3998279, 19991395]

約数ペア:

[(1, 19991395), (5, 3998279), (41, 487595), (113, 176915), (205, 97519), (565, 35383), (863, 23165), (4315, 4633)]