28264887

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^2\times {\mathrm{89}}^1$

素因数の和:244

約数の個数: 36

約数和(自身を含む): 47857680

約数和(自身を除く): 19592793

約数列:

[1, 3, 7, 9, 21, 63, 71, 89, 213, 267, 497, 623, 639, 801, 1491, 1869, 4473, 5041, 5607, 6319, 15123, 18957, 35287, 44233, 45369, 56871, 105861, 132699, 317583, 398097, 448649, 1345947, 3140543, 4037841, 9421629, 28264887]

約数ペア:

[(1, 28264887), (3, 9421629), (7, 4037841), (9, 3140543), (21, 1345947), (63, 448649), (71, 398097), (89, 317583), (213, 132699), (267, 105861), (497, 56871), (623, 45369), (639, 44233), (801, 35287), (1491, 18957), (1869, 15123), (4473, 6319), (5041, 5607)]