21004312

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{4519}}^1$

素因数の和:4615

約数の個数: 32

約数和(自身を含む): 45561600

約数和(自身を除く): 24557288

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 581, 664, 1162, 2324, 4519, 4648, 9038, 18076, 31633, 36152, 63266, 126532, 253064, 375077, 750154, 1500308, 2625539, 3000616, 5251078, 10502156, 21004312]

約数ペア:

[(1, 21004312), (2, 10502156), (4, 5251078), (7, 3000616), (8, 2625539), (14, 1500308), (28, 750154), (56, 375077), (83, 253064), (166, 126532), (332, 63266), (581, 36152), (664, 31633), (1162, 18076), (2324, 9038), (4519, 4648)]