21630075

素因数分解:

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

素因数の和:428

約数の個数: 48

約数和(自身を含む): 38628480

約数和(自身を除く): 16998405

約数列:

[1, 3, 5, 15, 19, 25, 43, 57, 75, 95, 129, 215, 285, 353, 475, 645, 817, 1059, 1075, 1425, 1765, 2451, 3225, 4085, 5295, 6707, 8825, 12255, 15179, 20121, 20425, 26475, 33535, 45537, 61275, 75895, 100605, 167675, 227685, 288401, 379475, 503025, 865203, 1138425, 1442005, 4326015, 7210025, 21630075]

約数ペア:

[(1, 21630075), (3, 7210025), (5, 4326015), (15, 1442005), (19, 1138425), (25, 865203), (43, 503025), (57, 379475), (75, 288401), (95, 227685), (129, 167675), (215, 100605), (285, 75895), (353, 61275), (475, 45537), (645, 33535), (817, 26475), (1059, 20425), (1075, 20121), (1425, 15179), (1765, 12255), (2451, 8825), (3225, 6707), (4085, 5295)]