81185455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73471}}^1$

素因数の和:73506

約数の個数: 16

約数和(自身を含む): 111089664

約数和(自身を除く): 29904209

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 73471, 367355, 955123, 1249007, 4775615, 6245035, 16237091, 81185455]

約数ペア:

[(1, 81185455), (5, 16237091), (13, 6245035), (17, 4775615), (65, 1249007), (85, 955123), (221, 367355), (1105, 73471)]