19995170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4157}}^1$

素因数の和:4214

約数の個数: 32

約数和(自身を含む): 39817008

約数和(自身を除く): 19821838

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4157, 4810, 8314, 20785, 41570, 54041, 108082, 153809, 270205, 307618, 540410, 769045, 1538090, 1999517, 3999034, 9997585, 19995170]

約数ペア:

[(1, 19995170), (2, 9997585), (5, 3999034), (10, 1999517), (13, 1538090), (26, 769045), (37, 540410), (65, 307618), (74, 270205), (130, 153809), (185, 108082), (370, 54041), (481, 41570), (962, 20785), (2405, 8314), (4157, 4810)]