21828940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155921}}^1$

素因数の和:155937

約数の個数: 24

約数和(自身を含む): 52389792

約数和(自身を除く): 30560852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155921, 311842, 623684, 779605, 1091447, 1559210, 2182894, 3118420, 4365788, 5457235, 10914470, 21828940]

約数ペア:

[(1, 21828940), (2, 10914470), (4, 5457235), (5, 4365788), (7, 3118420), (10, 2182894), (14, 1559210), (20, 1091447), (28, 779605), (35, 623684), (70, 311842), (140, 155921)]