21890862

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2447}}^1$

素因数の和:2533

約数の個数: 48

約数和(自身を含む): 54991872

約数和(自身を除く): 33101010

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 71, 126, 142, 213, 426, 497, 639, 994, 1278, 1491, 2447, 2982, 4473, 4894, 7341, 8946, 14682, 17129, 22023, 34258, 44046, 51387, 102774, 154161, 173737, 308322, 347474, 521211, 1042422, 1216159, 1563633, 2432318, 3127266, 3648477, 7296954, 10945431, 21890862]

約数ペア:

[(1, 21890862), (2, 10945431), (3, 7296954), (6, 3648477), (7, 3127266), (9, 2432318), (14, 1563633), (18, 1216159), (21, 1042422), (42, 521211), (63, 347474), (71, 308322), (126, 173737), (142, 154161), (213, 102774), (426, 51387), (497, 44046), (639, 34258), (994, 22023), (1278, 17129), (1491, 14682), (2447, 8946), (2982, 7341), (4473, 4894)]