21180495

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28817}}^1$

素因数の和:28839

約数の個数: 24

約数和(自身を含む): 39423024

約数和(自身を除く): 18242529

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28817, 86451, 144085, 201719, 432255, 605157, 1008595, 1412033, 3025785, 4236099, 7060165, 21180495]

約数ペア:

[(1, 21180495), (3, 7060165), (5, 4236099), (7, 3025785), (15, 1412033), (21, 1008595), (35, 605157), (49, 432255), (105, 201719), (147, 144085), (245, 86451), (735, 28817)]