81213657

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2287}}^1$

素因数の和:2405

約数の個数: 32

約数和(自身を含む): 131788800

約数和(自身を除く): 50575143

約数列:

[1, 3, 7, 19, 21, 57, 89, 133, 267, 399, 623, 1691, 1869, 2287, 5073, 6861, 11837, 16009, 35511, 43453, 48027, 130359, 203543, 304171, 610629, 912513, 1424801, 3867317, 4274403, 11601951, 27071219, 81213657]

約数ペア:

[(1, 81213657), (3, 27071219), (7, 11601951), (19, 4274403), (21, 3867317), (57, 1424801), (89, 912513), (133, 610629), (267, 304171), (399, 203543), (623, 130359), (1691, 48027), (1869, 43453), (2287, 35511), (5073, 16009), (6861, 11837)]