18380453

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 23901696

約数和(自身を除く): 5521243

約数列:

[1, 7, 13, 37, 53, 91, 103, 259, 371, 481, 689, 721, 1339, 1961, 3367, 3811, 4823, 5459, 9373, 13727, 25493, 26677, 38213, 49543, 70967, 178451, 201983, 346801, 496769, 1413881, 2625779, 18380453]

約数ペア:

[(1, 18380453), (7, 2625779), (13, 1413881), (37, 496769), (53, 346801), (91, 201983), (103, 178451), (259, 70967), (371, 49543), (481, 38213), (689, 26677), (721, 25493), (1339, 13727), (1961, 9373), (3367, 5459), (3811, 4823)]