1520872720

素因数分解:

$2^4\times 5^1\times {\mathrm{19010909}}^1$

素因数の和:19010922

約数の個数: 20

約数和(自身を含む): 3536029260

約数和(自身を除く): 2015156540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 19010909, 38021818, 76043636, 95054545, 152087272, 190109090, 304174544, 380218180, 760436360, 1520872720]

約数ペア:

[(1, 1520872720), (2, 760436360), (4, 380218180), (5, 304174544), (8, 190109090), (10, 152087272), (16, 95054545), (20, 76043636), (40, 38021818), (80, 19010909)]