19978722

素因数分解:

$2^1\times 3^2\times {\mathrm{631}}^1\times {\mathrm{1759}}^1$

素因数の和:2398

約数の個数: 24

約数和(自身を含む): 43380480

約数和(自身を除く): 23401758

約数列:

[1, 2, 3, 6, 9, 18, 631, 1262, 1759, 1893, 3518, 3786, 5277, 5679, 10554, 11358, 15831, 31662, 1109929, 2219858, 3329787, 6659574, 9989361, 19978722]

約数ペア:

[(1, 19978722), (2, 9989361), (3, 6659574), (6, 3329787), (9, 2219858), (18, 1109929), (631, 31662), (1262, 15831), (1759, 11358), (1893, 10554), (3518, 5679), (3786, 5277)]