19884040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45191}}^1$

素因数の和:45213

約数の個数: 32

約数和(自身を含む): 48807360

約数和(自身を除く): 28923320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45191, 90382, 180764, 225955, 361528, 451910, 497101, 903820, 994202, 1807640, 1988404, 2485505, 3976808, 4971010, 9942020, 19884040]

約数ペア:

[(1, 19884040), (2, 9942020), (4, 4971010), (5, 3976808), (8, 2485505), (10, 1988404), (11, 1807640), (20, 994202), (22, 903820), (40, 497101), (44, 451910), (55, 361528), (88, 225955), (110, 180764), (220, 90382), (440, 45191)]