81612370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{16421}}^1$

素因数の和:16506

約数の個数: 32

約数和(自身を含む): 170263296

約数和(自身を除く): 88650926

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4970, 16421, 32842, 82105, 114947, 164210, 229894, 574735, 1149470, 1165891, 2331782, 5829455, 8161237, 11658910, 16322474, 40806185, 81612370]

約数ペア:

[(1, 81612370), (2, 40806185), (5, 16322474), (7, 11658910), (10, 8161237), (14, 5829455), (35, 2331782), (70, 1165891), (71, 1149470), (142, 574735), (355, 229894), (497, 164210), (710, 114947), (994, 82105), (2485, 32842), (4970, 16421)]