21564789

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4751}}^1$

素因数の和:4860

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 9228171

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4539, 4751, 14253, 80767, 242301, 422839, 1268517, 7188263, 21564789]

約数ペア:

[(1, 21564789), (3, 7188263), (17, 1268517), (51, 422839), (89, 242301), (267, 80767), (1513, 14253), (4539, 4751)]