17520921

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:235

約数の個数: 48

約数和(自身を含む): 29621760

約数和(自身を除く): 12100839

約数列:

[1, 3, 9, 11, 27, 31, 33, 93, 99, 121, 173, 279, 297, 341, 363, 519, 837, 1023, 1089, 1557, 1903, 3069, 3267, 3751, 4671, 5363, 5709, 9207, 11253, 16089, 17127, 20933, 33759, 48267, 51381, 58993, 62799, 101277, 144801, 176979, 188397, 530937, 565191, 648923, 1592811, 1946769, 5840307, 17520921]

約数ペア:

[(1, 17520921), (3, 5840307), (9, 1946769), (11, 1592811), (27, 648923), (31, 565191), (33, 530937), (93, 188397), (99, 176979), (121, 144801), (173, 101277), (279, 62799), (297, 58993), (341, 51381), (363, 48267), (519, 33759), (837, 20933), (1023, 17127), (1089, 16089), (1557, 11253), (1903, 9207), (3069, 5709), (3267, 5363), (3751, 4671)]