12978045

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 24298560

約数和(自身を除く): 11320515

約数列:

[1, 3, 5, 9, 15, 19, 43, 45, 57, 95, 129, 171, 215, 285, 353, 387, 645, 817, 855, 1059, 1765, 1935, 2451, 3177, 4085, 5295, 6707, 7353, 12255, 15179, 15885, 20121, 33535, 36765, 45537, 60363, 75895, 100605, 136611, 227685, 288401, 301815, 683055, 865203, 1442005, 2595609, 4326015, 12978045]

約数ペア:

[(1, 12978045), (3, 4326015), (5, 2595609), (9, 1442005), (15, 865203), (19, 683055), (43, 301815), (45, 288401), (57, 227685), (95, 136611), (129, 100605), (171, 75895), (215, 60363), (285, 45537), (353, 36765), (387, 33535), (645, 20121), (817, 15885), (855, 15179), (1059, 12255), (1765, 7353), (1935, 6707), (2451, 5295), (3177, 4085)]