18640629

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1046

約数の個数: 36

約数和(自身を含む): 32082336

約数和(自身を除く): 13441707

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 983, 2107, 2709, 2949, 6321, 6881, 8847, 18963, 20643, 42269, 48167, 61929, 126807, 144501, 295883, 380421, 433503, 887649, 2071181, 2662947, 6213543, 18640629]

約数ペア:

[(1, 18640629), (3, 6213543), (7, 2662947), (9, 2071181), (21, 887649), (43, 433503), (49, 380421), (63, 295883), (129, 144501), (147, 126807), (301, 61929), (387, 48167), (441, 42269), (903, 20643), (983, 18963), (2107, 8847), (2709, 6881), (2949, 6321)]