21198927

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 31288320

約数和(自身を除く): 10089393

約数列:

[1, 3, 19, 41, 47, 57, 123, 141, 193, 579, 779, 893, 1927, 2337, 2679, 3667, 5781, 7913, 9071, 11001, 23739, 27213, 36613, 109839, 150347, 172349, 371911, 451041, 517047, 1115733, 7066309, 21198927]

約数ペア:

[(1, 21198927), (3, 7066309), (19, 1115733), (41, 517047), (47, 451041), (57, 371911), (123, 172349), (141, 150347), (193, 109839), (579, 36613), (779, 27213), (893, 23739), (1927, 11001), (2337, 9071), (2679, 7913), (3667, 5781)]