20129780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{91499}}^1$

素因数の和:91519

約数の個数: 24

約数和(自身を含む): 46116000

約数和(自身を除く): 25986220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 91499, 182998, 365996, 457495, 914990, 1006489, 1829980, 2012978, 4025956, 5032445, 10064890, 20129780]

約数ペア:

[(1, 20129780), (2, 10064890), (4, 5032445), (5, 4025956), (10, 2012978), (11, 1829980), (20, 1006489), (22, 914990), (44, 457495), (55, 365996), (110, 182998), (220, 91499)]