19915300

素因数分解:

$2^2\times 5^2\times {\mathrm{199153}}^1$

素因数の和:199167

約数の個数: 18

約数和(自身を含む): 43216418

約数和(自身を除く): 23301118

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199153, 398306, 796612, 995765, 1991530, 3983060, 4978825, 9957650, 19915300]

約数ペア:

[(1, 19915300), (2, 9957650), (4, 4978825), (5, 3983060), (10, 1991530), (20, 995765), (25, 796612), (50, 398306), (100, 199153)]