21721144

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1409}}^1$

素因数の和:1503

約数の個数: 32

約数和(自身を含む): 42638400

約数和(自身を除く): 20917256

約数列:

[1, 2, 4, 8, 41, 47, 82, 94, 164, 188, 328, 376, 1409, 1927, 2818, 3854, 5636, 7708, 11272, 15416, 57769, 66223, 115538, 132446, 231076, 264892, 462152, 529784, 2715143, 5430286, 10860572, 21721144]

約数ペア:

[(1, 21721144), (2, 10860572), (4, 5430286), (8, 2715143), (41, 529784), (47, 462152), (82, 264892), (94, 231076), (164, 132446), (188, 115538), (328, 66223), (376, 57769), (1409, 15416), (1927, 11272), (2818, 7708), (3854, 5636)]