21256542

素因数分解:

$2^1\times 3^2\times {\mathrm{691}}^1\times {\mathrm{1709}}^1$

素因数の和:2408

約数の個数: 24

約数和(自身を含む): 46149480

約数和(自身を除く): 24892938

約数列:

[1, 2, 3, 6, 9, 18, 691, 1382, 1709, 2073, 3418, 4146, 5127, 6219, 10254, 12438, 15381, 30762, 1180919, 2361838, 3542757, 7085514, 10628271, 21256542]

約数ペア:

[(1, 21256542), (2, 10628271), (3, 7085514), (6, 3542757), (9, 2361838), (18, 1180919), (691, 30762), (1382, 15381), (1709, 12438), (2073, 10254), (3418, 6219), (4146, 5127)]