21752145

素因数分解:

$3^5\times 5^1\times {\mathrm{17903}}^1$

素因数の和:17923

約数の個数: 24

約数和(自身を含む): 39102336

約数和(自身を除く): 17350191

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17903, 53709, 89515, 161127, 268545, 483381, 805635, 1450143, 2416905, 4350429, 7250715, 21752145]

約数ペア:

[(1, 21752145), (3, 7250715), (5, 4350429), (9, 2416905), (15, 1450143), (27, 805635), (45, 483381), (81, 268545), (135, 161127), (243, 89515), (405, 53709), (1215, 17903)]