18657155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 25498368

約数和(自身を除く): 6841213

約数列:

[1, 5, 11, 55, 61, 67, 83, 305, 335, 415, 671, 737, 913, 3355, 3685, 4087, 4565, 5063, 5561, 20435, 25315, 27805, 44957, 55693, 61171, 224785, 278465, 305855, 339221, 1696105, 3731431, 18657155]

約数ペア:

[(1, 18657155), (5, 3731431), (11, 1696105), (55, 339221), (61, 305855), (67, 278465), (83, 224785), (305, 61171), (335, 55693), (415, 44957), (671, 27805), (737, 25315), (913, 20435), (3355, 5561), (3685, 5063), (4087, 4565)]