20713940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79669}}^1$

素因数の和:79691

約数の個数: 24

約数和(自身を含む): 46845960

約数和(自身を除く): 26132020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79669, 159338, 318676, 398345, 796690, 1035697, 1593380, 2071394, 4142788, 5178485, 10356970, 20713940]

約数ペア:

[(1, 20713940), (2, 10356970), (4, 5178485), (5, 4142788), (10, 2071394), (13, 1593380), (20, 1035697), (26, 796690), (52, 398345), (65, 318676), (130, 159338), (260, 79669)]