21330140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82039}}^1$

素因数の和:82061

約数の個数: 24

約数和(自身を含む): 48239520

約数和(自身を除く): 26909380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82039, 164078, 328156, 410195, 820390, 1066507, 1640780, 2133014, 4266028, 5332535, 10665070, 21330140]

約数ペア:

[(1, 21330140), (2, 10665070), (4, 5332535), (5, 4266028), (10, 2133014), (13, 1640780), (20, 1066507), (26, 820390), (52, 410195), (65, 328156), (130, 164078), (260, 82039)]