21278196

素因数分解:

$2^2\times 3^2\times {\mathrm{591061}}^1$

素因数の和:591071

約数の個数: 18

約数和(自身を含む): 53786642

約数和(自身を除く): 32508446

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 591061, 1182122, 1773183, 2364244, 3546366, 5319549, 7092732, 10639098, 21278196]

約数ペア:

[(1, 21278196), (2, 10639098), (3, 7092732), (4, 5319549), (6, 3546366), (9, 2364244), (12, 1773183), (18, 1182122), (36, 591061)]