21143007

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:443

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 10156833

約数列:

[1, 3, 9, 79, 131, 227, 237, 393, 681, 711, 1179, 2043, 10349, 17933, 29737, 31047, 53799, 89211, 93141, 161397, 267633, 2349223, 7047669, 21143007]

約数ペア:

[(1, 21143007), (3, 7047669), (9, 2349223), (79, 267633), (131, 161397), (227, 93141), (237, 89211), (393, 53799), (681, 31047), (711, 29737), (1179, 17933), (2043, 10349)]