81697220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{5087}}^1$

素因数の和:5180

約数の個数: 48

約数和(自身を含む): 189762048

約数和(自身を除く): 108064828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1460, 1606, 3212, 4015, 5087, 8030, 10174, 16060, 20348, 25435, 50870, 55957, 101740, 111914, 223828, 279785, 371351, 559570, 742702, 1119140, 1485404, 1856755, 3713510, 4084861, 7427020, 8169722, 16339444, 20424305, 40848610, 81697220]

約数ペア:

[(1, 81697220), (2, 40848610), (4, 20424305), (5, 16339444), (10, 8169722), (11, 7427020), (20, 4084861), (22, 3713510), (44, 1856755), (55, 1485404), (73, 1119140), (110, 742702), (146, 559570), (220, 371351), (292, 279785), (365, 223828), (730, 111914), (803, 101740), (1460, 55957), (1606, 50870), (3212, 25435), (4015, 20348), (5087, 16060), (8030, 10174)]