21491729

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{1019}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 25850880

約数和(自身を除く): 4359151

約数列:

[1, 7, 23, 131, 161, 917, 1019, 3013, 7133, 21091, 23437, 133489, 164059, 934423, 3070247, 21491729]

約数ペア:

[(1, 21491729), (7, 3070247), (23, 934423), (131, 164059), (161, 133489), (917, 23437), (1019, 21091), (3013, 7133)]