19554160

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4007}}^1$

素因数の和:4081

約数の個数: 40

約数和(自身を含む): 46220256

約数和(自身を除く): 26666096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4007, 4880, 8014, 16028, 20035, 32056, 40070, 64112, 80140, 160280, 244427, 320560, 488854, 977708, 1222135, 1955416, 2444270, 3910832, 4888540, 9777080, 19554160]

約数ペア:

[(1, 19554160), (2, 9777080), (4, 4888540), (5, 3910832), (8, 2444270), (10, 1955416), (16, 1222135), (20, 977708), (40, 488854), (61, 320560), (80, 244427), (122, 160280), (244, 80140), (305, 64112), (488, 40070), (610, 32056), (976, 20035), (1220, 16028), (2440, 8014), (4007, 4880)]