19962605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9907}}^1$

素因数の和:9956

約数の個数: 16

約数和(自身を含む): 26632704

約数和(自身を除く): 6670099

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9907, 49535, 128791, 307117, 643955, 1535585, 3992521, 19962605]

約数ペア:

[(1, 19962605), (5, 3992521), (13, 1535585), (31, 643955), (65, 307117), (155, 128791), (403, 49535), (2015, 9907)]