21521844

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13903}}^1$

素因数の和:13956

約数の個数: 36

約数和(自身を含む): 55671616

約数和(自身を除く): 34149772

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13903, 27806, 41709, 55612, 83418, 125127, 166836, 250254, 500508, 597829, 1195658, 1793487, 2391316, 3586974, 5380461, 7173948, 10760922, 21521844]

約数ペア:

[(1, 21521844), (2, 10760922), (3, 7173948), (4, 5380461), (6, 3586974), (9, 2391316), (12, 1793487), (18, 1195658), (36, 597829), (43, 500508), (86, 250254), (129, 166836), (172, 125127), (258, 83418), (387, 55612), (516, 41709), (774, 27806), (1548, 13903)]