81351205

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{887}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 112783104

約数和(自身を除く): 31431899

約数列:

[1, 5, 13, 17, 65, 83, 85, 221, 415, 887, 1079, 1105, 1411, 4435, 5395, 7055, 11531, 15079, 18343, 57655, 73621, 75395, 91715, 196027, 368105, 957073, 980135, 1251557, 4785365, 6257785, 16270241, 81351205]

約数ペア:

[(1, 81351205), (5, 16270241), (13, 6257785), (17, 4785365), (65, 1251557), (83, 980135), (85, 957073), (221, 368105), (415, 196027), (887, 91715), (1079, 75395), (1105, 73621), (1411, 57655), (4435, 18343), (5395, 15079), (7055, 11531)]