21500086

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{53}}^2\times {\mathrm{89}}^1$

素因数の和:240

約数の個数: 24

約数和(自身を含む): 34012440

約数和(自身を除く): 12512354

約数列:

[1, 2, 43, 53, 86, 89, 106, 178, 2279, 2809, 3827, 4558, 4717, 5618, 7654, 9434, 120787, 202831, 241574, 250001, 405662, 500002, 10750043, 21500086]

約数ペア:

[(1, 21500086), (2, 10750043), (43, 500002), (53, 405662), (86, 250001), (89, 241574), (106, 202831), (178, 120787), (2279, 9434), (2809, 7654), (3827, 5618), (4558, 4717)]