21742820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4297}}^1$

素因数の和:4340

約数の個数: 48

約数和(自身を含む): 51988608

約数和(自身を除く): 30245788

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 4297, 5060, 8594, 17188, 21485, 42970, 47267, 85940, 94534, 98831, 189068, 197662, 236335, 395324, 472670, 494155, 945340, 988310, 1087141, 1976620, 2174282, 4348564, 5435705, 10871410, 21742820]

約数ペア:

[(1, 21742820), (2, 10871410), (4, 5435705), (5, 4348564), (10, 2174282), (11, 1976620), (20, 1087141), (22, 988310), (23, 945340), (44, 494155), (46, 472670), (55, 395324), (92, 236335), (110, 197662), (115, 189068), (220, 98831), (230, 94534), (253, 85940), (460, 47267), (506, 42970), (1012, 21485), (1265, 17188), (2530, 8594), (4297, 5060)]