21238836

素因数分解:

$2^2\times 3^1\times {\mathrm{137}}^1\times {\mathrm{12919}}^1$

素因数の和:13063

約数の個数: 24

約数和(自身を含む): 49922880

約数和(自身を除く): 28684044

約数列:

[1, 2, 3, 4, 6, 12, 137, 274, 411, 548, 822, 1644, 12919, 25838, 38757, 51676, 77514, 155028, 1769903, 3539806, 5309709, 7079612, 10619418, 21238836]

約数ペア:

[(1, 21238836), (2, 10619418), (3, 7079612), (4, 5309709), (6, 3539806), (12, 1769903), (137, 155028), (274, 77514), (411, 51676), (548, 38757), (822, 25838), (1644, 12919)]