21285018

素因数分解:

$2^1\times 3^4\times {\mathrm{83}}^1\times {\mathrm{1583}}^1$

素因数の和:1680

約数の個数: 40

約数和(自身を含む): 48299328

約数和(自身を除く): 27014310

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 83, 162, 166, 249, 498, 747, 1494, 1583, 2241, 3166, 4482, 4749, 6723, 9498, 13446, 14247, 28494, 42741, 85482, 128223, 131389, 256446, 262778, 394167, 788334, 1182501, 2365002, 3547503, 7095006, 10642509, 21285018]

約数ペア:

[(1, 21285018), (2, 10642509), (3, 7095006), (6, 3547503), (9, 2365002), (18, 1182501), (27, 788334), (54, 394167), (81, 262778), (83, 256446), (162, 131389), (166, 128223), (249, 85482), (498, 42741), (747, 28494), (1494, 14247), (1583, 13446), (2241, 9498), (3166, 6723), (4482, 4749)]