81204440

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{18973}}^1$

素因数の和:19091

約数の個数: 32

約数和(自身を含む): 184427280

約数和(自身を除く): 103222840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 18973, 37946, 75892, 94865, 151784, 189730, 379460, 758920, 2030111, 4060222, 8120444, 10150555, 16240888, 20301110, 40602220, 81204440]

約数ペア:

[(1, 81204440), (2, 40602220), (4, 20301110), (5, 16240888), (8, 10150555), (10, 8120444), (20, 4060222), (40, 2030111), (107, 758920), (214, 379460), (428, 189730), (535, 151784), (856, 94865), (1070, 75892), (2140, 37946), (4280, 18973)]