28105399

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 32788800

約数和(自身を除く): 4683401

約数列:

[1, 7, 89, 197, 229, 623, 1379, 1603, 17533, 20381, 45113, 122731, 142667, 315791, 4015057, 28105399]

約数ペア:

[(1, 28105399), (7, 4015057), (89, 315791), (197, 142667), (229, 122731), (623, 45113), (1379, 20381), (1603, 17533)]