19407850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^2$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 45648864

約数和(自身を除く): 26241014

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 71, 77, 110, 142, 154, 175, 275, 350, 355, 385, 497, 550, 710, 770, 781, 994, 1562, 1775, 1925, 2485, 3550, 3850, 3905, 4970, 5041, 5467, 7810, 10082, 10934, 12425, 19525, 24850, 25205, 27335, 35287, 39050, 50410, 54670, 55451, 70574, 110902, 126025, 136675, 176435, 252050, 273350, 277255, 352870, 388157, 554510, 776314, 882175, 1386275, 1764350, 1940785, 2772550, 3881570, 9703925, 19407850]

約数ペア:

[(1, 19407850), (2, 9703925), (5, 3881570), (7, 2772550), (10, 1940785), (11, 1764350), (14, 1386275), (22, 882175), (25, 776314), (35, 554510), (50, 388157), (55, 352870), (70, 277255), (71, 273350), (77, 252050), (110, 176435), (142, 136675), (154, 126025), (175, 110902), (275, 70574), (350, 55451), (355, 54670), (385, 50410), (497, 39050), (550, 35287), (710, 27335), (770, 25205), (781, 24850), (994, 19525), (1562, 12425), (1775, 10934), (1925, 10082), (2485, 7810), (3550, 5467), (3850, 5041), (3905, 4970)]