21572145

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{68483}}^1$

素因数の和:68501

約数の個数: 24

約数和(自身を含む): 42734016

約数和(自身を除く): 21161871

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 68483, 205449, 342415, 479381, 616347, 1027245, 1438143, 2396905, 3081735, 4314429, 7190715, 21572145]

約数ペア:

[(1, 21572145), (3, 7190715), (5, 4314429), (7, 3081735), (9, 2396905), (15, 1438143), (21, 1027245), (35, 616347), (45, 479381), (63, 342415), (105, 205449), (315, 68483)]