20748200

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9431}}^1$

素因数の和:9458

約数の個数: 48

約数和(自身を含む): 52630560

約数和(自身を除く): 31882360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9431, 18862, 37724, 47155, 75448, 94310, 103741, 188620, 207482, 235775, 377240, 414964, 471550, 518705, 829928, 943100, 1037410, 1886200, 2074820, 2593525, 4149640, 5187050, 10374100, 20748200]

約数ペア:

[(1, 20748200), (2, 10374100), (4, 5187050), (5, 4149640), (8, 2593525), (10, 2074820), (11, 1886200), (20, 1037410), (22, 943100), (25, 829928), (40, 518705), (44, 471550), (50, 414964), (55, 377240), (88, 235775), (100, 207482), (110, 188620), (200, 103741), (220, 94310), (275, 75448), (440, 47155), (550, 37724), (1100, 18862), (2200, 9431)]