31421691

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1657}}^1$

素因数の和:1720

約数の個数: 36

約数和(自身を含む): 54057432

約数和(自身を除く): 22635741

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1657, 2107, 2709, 4971, 6321, 11599, 14913, 18963, 34797, 71251, 81193, 104391, 213753, 243579, 498757, 641259, 730737, 1496271, 3491299, 4488813, 10473897, 31421691]

約数ペア:

[(1, 31421691), (3, 10473897), (7, 4488813), (9, 3491299), (21, 1496271), (43, 730737), (49, 641259), (63, 498757), (129, 243579), (147, 213753), (301, 104391), (387, 81193), (441, 71251), (903, 34797), (1657, 18963), (2107, 14913), (2709, 11599), (4971, 6321)]