21273315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2441}}^1$

素因数の和:2539

約数の個数: 32

約数和(自身を含む): 39384576

約数和(自身を除く): 18111261

約数列:

[1, 3, 5, 7, 15, 21, 35, 83, 105, 249, 415, 581, 1245, 1743, 2441, 2905, 7323, 8715, 12205, 17087, 36615, 51261, 85435, 202603, 256305, 607809, 1013015, 1418221, 3039045, 4254663, 7091105, 21273315]

約数ペア:

[(1, 21273315), (3, 7091105), (5, 4254663), (7, 3039045), (15, 1418221), (21, 1013015), (35, 607809), (83, 256305), (105, 202603), (249, 85435), (415, 51261), (581, 36615), (1245, 17087), (1743, 12205), (2441, 8715), (2905, 7323)]