20556408

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{19919}}^1$

素因数の和:19971

約数の個数: 32

約数和(自身を含む): 52588800

約数和(自身を除く): 32032392

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 19919, 39838, 59757, 79676, 119514, 159352, 239028, 478056, 856517, 1713034, 2569551, 3426068, 5139102, 6852136, 10278204, 20556408]

約数ペア:

[(1, 20556408), (2, 10278204), (3, 6852136), (4, 5139102), (6, 3426068), (8, 2569551), (12, 1713034), (24, 856517), (43, 478056), (86, 239028), (129, 159352), (172, 119514), (258, 79676), (344, 59757), (516, 39838), (1032, 19919)]