18065420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22031}}^1$

素因数の和:22081

約数の個数: 24

約数和(自身を含む): 38864448

約数和(自身を除く): 20799028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22031, 44062, 88124, 110155, 220310, 440620, 903271, 1806542, 3613084, 4516355, 9032710, 18065420]

約数ペア:

[(1, 18065420), (2, 9032710), (4, 4516355), (5, 3613084), (10, 1806542), (20, 903271), (41, 440620), (82, 220310), (164, 110155), (205, 88124), (410, 44062), (820, 22031)]