19974359

素因数分解:

${\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:298

約数の個数: 16

約数和(自身を含む): 21384000

約数和(自身を除く): 1409641

約数列:

[1, 29, 71, 89, 109, 2059, 2581, 3161, 6319, 7739, 9701, 183251, 224431, 281329, 688771, 19974359]

約数ペア:

[(1, 19974359), (29, 688771), (71, 281329), (89, 224431), (109, 183251), (2059, 9701), (2581, 7739), (3161, 6319)]