18893189

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{491}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 22671360

約数和(自身を除く): 3778171

約数列:

[1, 7, 23, 161, 239, 491, 1673, 3437, 5497, 11293, 38479, 79051, 117349, 821443, 2699027, 18893189]

約数ペア:

[(1, 18893189), (7, 2699027), (23, 821443), (161, 117349), (239, 79051), (491, 38479), (1673, 11293), (3437, 5497)]