18980605

素因数分解:

$5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{2389}}^1$

素因数の和:2628

約数の個数: 16

約数和(自身を含む): 26156160

約数和(自身を除く): 7175555

約数列:

[1, 5, 7, 35, 227, 1135, 1589, 2389, 7945, 11945, 16723, 83615, 542303, 2711515, 3796121, 18980605]

約数ペア:

[(1, 18980605), (5, 3796121), (7, 2711515), (35, 542303), (227, 83615), (1135, 16723), (1589, 11945), (2389, 7945)]