28440940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129277}}^1$

素因数の和:129297

約数の個数: 24

約数和(自身を含む): 65156112

約数和(自身を除く): 36715172

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 129277, 258554, 517108, 646385, 1292770, 1422047, 2585540, 2844094, 5688188, 7110235, 14220470, 28440940]

約数ペア:

[(1, 28440940), (2, 14220470), (4, 7110235), (5, 5688188), (10, 2844094), (11, 2585540), (20, 1422047), (22, 1292770), (44, 646385), (55, 517108), (110, 258554), (220, 129277)]