21814940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155821}}^1$

素因数の和:155837

約数の個数: 24

約数和(自身を含む): 52356192

約数和(自身を除く): 30541252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155821, 311642, 623284, 779105, 1090747, 1558210, 2181494, 3116420, 4362988, 5453735, 10907470, 21814940]

約数ペア:

[(1, 21814940), (2, 10907470), (4, 5453735), (5, 4362988), (7, 3116420), (10, 2181494), (14, 1558210), (20, 1090747), (28, 779105), (35, 623284), (70, 311642), (140, 155821)]