18889480

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6469}}^1$

素因数の和:6553

約数の個数: 32

約数和(自身を含む): 43090200

約数和(自身を除く): 24200720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6469, 12938, 25876, 32345, 51752, 64690, 129380, 258760, 472237, 944474, 1888948, 2361185, 3777896, 4722370, 9444740, 18889480]

約数ペア:

[(1, 18889480), (2, 9444740), (4, 4722370), (5, 3777896), (8, 2361185), (10, 1888948), (20, 944474), (40, 472237), (73, 258760), (146, 129380), (292, 64690), (365, 51752), (584, 32345), (730, 25876), (1460, 12938), (2920, 6469)]