661259991

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{443501}}^1$

素因数の和:443582

約数の個数: 16

約数和(自身を含む): 1021828608

約数和(自身を除く): 360568617

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 443501, 1330503, 3104507, 9313521, 31488571, 94465713, 220419997, 661259991]

約数ペア:

[(1, 661259991), (3, 220419997), (7, 94465713), (21, 31488571), (71, 9313521), (213, 3104507), (497, 1330503), (1491, 443501)]