20903913

素因数分解:

$3^4\times {\mathrm{421}}^1\times {\mathrm{613}}^1$

素因数の和:1046

約数の個数: 20

約数和(自身を含む): 31352068

約数和(自身を除く): 10448155

約数列:

[1, 3, 9, 27, 81, 421, 613, 1263, 1839, 3789, 5517, 11367, 16551, 34101, 49653, 258073, 774219, 2322657, 6967971, 20903913]

約数ペア:

[(1, 20903913), (3, 6967971), (9, 2322657), (27, 774219), (81, 258073), (421, 49653), (613, 34101), (1263, 16551), (1839, 11367), (3789, 5517)]