81401980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{370009}}^1$

素因数の和:370029

約数の個数: 24

約数和(自身を含む): 186485040

約数和(自身を除く): 105083060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 370009, 740018, 1480036, 1850045, 3700090, 4070099, 7400180, 8140198, 16280396, 20350495, 40700990, 81401980]

約数ペア:

[(1, 81401980), (2, 40700990), (4, 20350495), (5, 16280396), (10, 8140198), (11, 7400180), (20, 4070099), (22, 3700090), (44, 1850045), (55, 1480036), (110, 740018), (220, 370009)]