31312491

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21001}}^1$

素因数の和:21082

約数の個数: 16

約数和(自身を含む): 48388608

約数和(自身を除く): 17076117

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 21001, 63003, 147007, 441021, 1491071, 4473213, 10437497, 31312491]

約数ペア:

[(1, 31312491), (3, 10437497), (7, 4473213), (21, 1491071), (71, 441021), (213, 147007), (497, 63003), (1491, 21001)]