81138232

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20407}}^1$

素因数の和:20491

約数の個数: 32

約数和(自身を含む): 176325120

約数和(自身を除く): 95186888

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 20407, 40814, 81628, 142849, 163256, 285698, 571396, 1142792, 1448897, 2897794, 5795588, 10142279, 11591176, 20284558, 40569116, 81138232]

約数ペア:

[(1, 81138232), (2, 40569116), (4, 20284558), (7, 11591176), (8, 10142279), (14, 5795588), (28, 2897794), (56, 1448897), (71, 1142792), (142, 571396), (284, 285698), (497, 163256), (568, 142849), (994, 81628), (1988, 40814), (3976, 20407)]