20489665

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25453}}^1$

素因数の和:25488

約数の個数: 16

約数和(自身を含む): 29323008

約数和(自身を除く): 8833343

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 25453, 127265, 178171, 585419, 890855, 2927095, 4097933, 20489665]

約数ペア:

[(1, 20489665), (5, 4097933), (7, 2927095), (23, 890855), (35, 585419), (115, 178171), (161, 127265), (805, 25453)]