18885020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12263}}^1$

素因数の和:12290

約数の個数: 48

約数和(自身を含む): 49448448

約数和(自身を除く): 30563428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12263, 24526, 49052, 61315, 85841, 122630, 134893, 171682, 245260, 269786, 343364, 429205, 539572, 674465, 858410, 944251, 1348930, 1716820, 1888502, 2697860, 3777004, 4721255, 9442510, 18885020]

約数ペア:

[(1, 18885020), (2, 9442510), (4, 4721255), (5, 3777004), (7, 2697860), (10, 1888502), (11, 1716820), (14, 1348930), (20, 944251), (22, 858410), (28, 674465), (35, 539572), (44, 429205), (55, 343364), (70, 269786), (77, 245260), (110, 171682), (140, 134893), (154, 122630), (220, 85841), (308, 61315), (385, 49052), (770, 24526), (1540, 12263)]