161931385

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{18287}}^1$

素因数の和:18333

約数の個数: 32

約数和(自身を含む): 252813312

約数和(自身を除く): 90881927

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 8855, 18287, 91435, 128009, 201157, 420601, 640045, 1005785, 1408099, 2103005, 2944207, 4626611, 7040495, 14721035, 23133055, 32386277, 161931385]

約数ペア:

[(1, 161931385), (5, 32386277), (7, 23133055), (11, 14721035), (23, 7040495), (35, 4626611), (55, 2944207), (77, 2103005), (115, 1408099), (161, 1005785), (253, 640045), (385, 420601), (805, 201157), (1265, 128009), (1771, 91435), (8855, 18287)]