81377855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{503}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 111767040

約数和(自身を除く): 30389185

約数列:

[1, 5, 13, 19, 65, 95, 131, 247, 503, 655, 1235, 1703, 2489, 2515, 6539, 8515, 9557, 12445, 32357, 32695, 47785, 65893, 124241, 161785, 329465, 621205, 856609, 1251967, 4283045, 6259835, 16275571, 81377855]

約数ペア:

[(1, 81377855), (5, 16275571), (13, 6259835), (19, 4283045), (65, 1251967), (95, 856609), (131, 621205), (247, 329465), (503, 161785), (655, 124241), (1235, 65893), (1703, 47785), (2489, 32695), (2515, 32357), (6539, 12445), (8515, 9557)]