64890225

素因数分解:

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

素因数の和:431

約数の個数: 72

約数和(自身を含む): 125542560

約数和(自身を除く): 60652335

約数列:

[1, 3, 5, 9, 15, 19, 25, 43, 45, 57, 75, 95, 129, 171, 215, 225, 285, 353, 387, 475, 645, 817, 855, 1059, 1075, 1425, 1765, 1935, 2451, 3177, 3225, 4085, 4275, 5295, 6707, 7353, 8825, 9675, 12255, 15179, 15885, 20121, 20425, 26475, 33535, 36765, 45537, 60363, 61275, 75895, 79425, 100605, 136611, 167675, 183825, 227685, 288401, 301815, 379475, 503025, 683055, 865203, 1138425, 1442005, 1509075, 2595609, 3415275, 4326015, 7210025, 12978045, 21630075, 64890225]

約数ペア:

[(1, 64890225), (3, 21630075), (5, 12978045), (9, 7210025), (15, 4326015), (19, 3415275), (25, 2595609), (43, 1509075), (45, 1442005), (57, 1138425), (75, 865203), (95, 683055), (129, 503025), (171, 379475), (215, 301815), (225, 288401), (285, 227685), (353, 183825), (387, 167675), (475, 136611), (645, 100605), (817, 79425), (855, 75895), (1059, 61275), (1075, 60363), (1425, 45537), (1765, 36765), (1935, 33535), (2451, 26475), (3177, 20425), (3225, 20121), (4085, 15885), (4275, 15179), (5295, 12255), (6707, 9675), (7353, 8825)]