81285115

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 105336000

約数和(自身を除く): 24050885

約数列:

[1, 5, 29, 37, 109, 139, 145, 185, 545, 695, 1073, 3161, 4031, 4033, 5143, 5365, 15151, 15805, 20155, 20165, 25715, 75755, 116957, 149147, 439379, 560587, 584785, 745735, 2196895, 2802935, 16257023, 81285115]

約数ペア:

[(1, 81285115), (5, 16257023), (29, 2802935), (37, 2196895), (109, 745735), (139, 584785), (145, 560587), (185, 439379), (545, 149147), (695, 116957), (1073, 75755), (3161, 25715), (4031, 20165), (4033, 20155), (5143, 15805), (5365, 15151)]