12981605

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 19428864

約数和(自身を除く): 6447259

約数列:

[1, 5, 7, 13, 35, 65, 91, 103, 277, 455, 515, 721, 1339, 1385, 1939, 3601, 3605, 6695, 9373, 9695, 18005, 25207, 28531, 46865, 126035, 142655, 199717, 370903, 998585, 1854515, 2596321, 12981605]

約数ペア:

[(1, 12981605), (5, 2596321), (7, 1854515), (13, 998585), (35, 370903), (65, 199717), (91, 142655), (103, 126035), (277, 46865), (455, 28531), (515, 25207), (721, 18005), (1339, 9695), (1385, 9373), (1939, 6695), (3601, 3605)]