20915420

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1153}}^1$

素因数の和:2069

約数の個数: 24

約数和(自身を含む): 44008944

約数和(自身を除く): 23093524

約数列:

[1, 2, 4, 5, 10, 20, 907, 1153, 1814, 2306, 3628, 4535, 4612, 5765, 9070, 11530, 18140, 23060, 1045771, 2091542, 4183084, 5228855, 10457710, 20915420]

約数ペア:

[(1, 20915420), (2, 10457710), (4, 5228855), (5, 4183084), (10, 2091542), (20, 1045771), (907, 23060), (1153, 18140), (1814, 11530), (2306, 9070), (3628, 5765), (4535, 4612)]