21207195

素因数分解:

$3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3121}}^1$

素因数の和:3283

約数の個数: 24

約数和(自身を含む): 37014432

約数和(自身を除く): 15807237

約数列:

[1, 3, 5, 9, 15, 45, 151, 453, 755, 1359, 2265, 3121, 6795, 9363, 15605, 28089, 46815, 140445, 471271, 1413813, 2356355, 4241439, 7069065, 21207195]

約数ペア:

[(1, 21207195), (3, 7069065), (5, 4241439), (9, 2356355), (15, 1413813), (45, 471271), (151, 140445), (453, 46815), (755, 28089), (1359, 15605), (2265, 9363), (3121, 6795)]