20305485

素因数分解:

$3^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{277}}^1$

素因数の和:475

約数の個数: 40

約数和(自身を含む): 36732696

約数和(自身を除く): 16427211

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 181, 277, 405, 543, 831, 905, 1385, 1629, 2493, 2715, 4155, 4887, 7479, 8145, 12465, 14661, 22437, 24435, 37395, 50137, 73305, 112185, 150411, 250685, 451233, 752055, 1353699, 2256165, 4061097, 6768495, 20305485]

約数ペア:

[(1, 20305485), (3, 6768495), (5, 4061097), (9, 2256165), (15, 1353699), (27, 752055), (45, 451233), (81, 250685), (135, 150411), (181, 112185), (277, 73305), (405, 50137), (543, 37395), (831, 24435), (905, 22437), (1385, 14661), (1629, 12465), (2493, 8145), (2715, 7479), (4155, 4887)]