28505855

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2083}}^1$

素因数の和:2135

約数の個数: 32

約数和(自身を含む): 43213824

約数和(自身を除く): 14707969

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1955, 2083, 2737, 10415, 13685, 14581, 35411, 47909, 72905, 177055, 239545, 247877, 335363, 814453, 1239385, 1676815, 4072265, 5701171, 28505855]

約数ペア:

[(1, 28505855), (5, 5701171), (7, 4072265), (17, 1676815), (23, 1239385), (35, 814453), (85, 335363), (115, 247877), (119, 239545), (161, 177055), (391, 72905), (595, 47909), (805, 35411), (1955, 14581), (2083, 13685), (2737, 10415)]