20991588

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{773}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 51319296

約数和(自身を除く): 30327708

約数列:

[1, 2, 3, 4, 6, 12, 31, 62, 73, 93, 124, 146, 186, 219, 292, 372, 438, 773, 876, 1546, 2263, 2319, 3092, 4526, 4638, 6789, 9052, 9276, 13578, 23963, 27156, 47926, 56429, 71889, 95852, 112858, 143778, 169287, 225716, 287556, 338574, 677148, 1749299, 3498598, 5247897, 6997196, 10495794, 20991588]

約数ペア:

[(1, 20991588), (2, 10495794), (3, 6997196), (4, 5247897), (6, 3498598), (12, 1749299), (31, 677148), (62, 338574), (73, 287556), (93, 225716), (124, 169287), (146, 143778), (186, 112858), (219, 95852), (292, 71889), (372, 56429), (438, 47926), (773, 27156), (876, 23963), (1546, 13578), (2263, 9276), (2319, 9052), (3092, 6789), (4526, 4638)]