19808061

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{53}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 34038144

約数和(自身を除く): 14230083

約数列:

[1, 3, 7, 13, 21, 37, 39, 53, 91, 111, 159, 259, 273, 371, 481, 689, 777, 1113, 1369, 1443, 1961, 2067, 3367, 4107, 4823, 5883, 9583, 10101, 13727, 14469, 17797, 25493, 28749, 41181, 53391, 72557, 76479, 124579, 178451, 217671, 373737, 507899, 535353, 943241, 1523697, 2829723, 6602687, 19808061]

約数ペア:

[(1, 19808061), (3, 6602687), (7, 2829723), (13, 1523697), (21, 943241), (37, 535353), (39, 507899), (53, 373737), (91, 217671), (111, 178451), (159, 124579), (259, 76479), (273, 72557), (371, 53391), (481, 41181), (689, 28749), (777, 25493), (1113, 17797), (1369, 14469), (1443, 13727), (1961, 10101), (2067, 9583), (3367, 5883), (4107, 4823)]