81392140

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{15017}}^1$

素因数の和:15297

約数の個数: 24

約数和(自身を含む): 171565632

約数和(自身を除く): 90173492

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5420, 15017, 30034, 60068, 75085, 150170, 300340, 4069607, 8139214, 16278428, 20348035, 40696070, 81392140]

約数ペア:

[(1, 81392140), (2, 40696070), (4, 20348035), (5, 16278428), (10, 8139214), (20, 4069607), (271, 300340), (542, 150170), (1084, 75085), (1355, 60068), (2710, 30034), (5420, 15017)]