21946990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2137}}^1$

素因数の和:2236

約数の個数: 32

約数和(自身を含む): 43102080

約数和(自身を除く): 21155090

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 2137, 4274, 5135, 10270, 10685, 21370, 27781, 55562, 138905, 168823, 277810, 337646, 844115, 1688230, 2194699, 4389398, 10973495, 21946990]

約数ペア:

[(1, 21946990), (2, 10973495), (5, 4389398), (10, 2194699), (13, 1688230), (26, 844115), (65, 337646), (79, 277810), (130, 168823), (158, 138905), (395, 55562), (790, 27781), (1027, 21370), (2054, 10685), (2137, 10270), (4274, 5135)]