19021520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{33967}}^1$

素因数の和:33987

約数の個数: 40

約数和(自身を含む): 50544384

約数和(自身を除く): 31522864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 33967, 67934, 135868, 169835, 237769, 271736, 339670, 475538, 543472, 679340, 951076, 1188845, 1358680, 1902152, 2377690, 2717360, 3804304, 4755380, 9510760, 19021520]

約数ペア:

[(1, 19021520), (2, 9510760), (4, 4755380), (5, 3804304), (7, 2717360), (8, 2377690), (10, 1902152), (14, 1358680), (16, 1188845), (20, 951076), (28, 679340), (35, 543472), (40, 475538), (56, 339670), (70, 271736), (80, 237769), (112, 169835), (140, 135868), (280, 67934), (560, 33967)]