20990605

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1\times {\mathrm{523}}^1$

素因数の和:900

約数の個数: 16

約数和(自身を含む): 26409600

約数和(自身を除く): 5418995

約数列:

[1, 5, 23, 115, 349, 523, 1745, 2615, 8027, 12029, 40135, 60145, 182527, 912635, 4198121, 20990605]

約数ペア:

[(1, 20990605), (5, 4198121), (23, 912635), (115, 182527), (349, 60145), (523, 40135), (1745, 12029), (2615, 8027)]