19953175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{53}}^1$

素因数の和:148

約数の個数: 36

約数和(自身を含む): 28263816

約数和(自身を除く): 8310641

約数列:

[1, 5, 11, 25, 37, 53, 55, 185, 265, 275, 407, 583, 925, 1325, 1369, 1961, 2035, 2915, 6845, 9805, 10175, 14575, 15059, 21571, 34225, 49025, 72557, 75295, 107855, 362785, 376475, 539275, 798127, 1813925, 3990635, 19953175]

約数ペア:

[(1, 19953175), (5, 3990635), (11, 1813925), (25, 798127), (37, 539275), (53, 376475), (55, 362785), (185, 107855), (265, 75295), (275, 72557), (407, 49025), (583, 34225), (925, 21571), (1325, 15059), (1369, 14575), (1961, 10175), (2035, 9805), (2915, 6845)]