7140021

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7907}}^1$

素因数の和:7960

約数の個数: 16

約数和(自身を含む): 11134464

約数和(自身を除く): 3994443

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 7907, 23721, 55349, 166047, 340001, 1020003, 2380007, 7140021]

約数ペア:

[(1, 7140021), (3, 2380007), (7, 1020003), (21, 340001), (43, 166047), (129, 55349), (301, 23721), (903, 7907)]