81879075

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 156686400

約数和(自身を除く): 74807325

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 107, 171, 179, 225, 285, 321, 475, 535, 537, 855, 895, 963, 1425, 1605, 1611, 2033, 2675, 2685, 3401, 4275, 4475, 4815, 6099, 8025, 8055, 10165, 10203, 13425, 17005, 18297, 19153, 24075, 30495, 30609, 40275, 50825, 51015, 57459, 85025, 91485, 95765, 152475, 153045, 172377, 255075, 287295, 363907, 457425, 478825, 765225, 861885, 1091721, 1436475, 1819535, 3275163, 4309425, 5458605, 9097675, 16375815, 27293025, 81879075]

約数ペア:

[(1, 81879075), (3, 27293025), (5, 16375815), (9, 9097675), (15, 5458605), (19, 4309425), (25, 3275163), (45, 1819535), (57, 1436475), (75, 1091721), (95, 861885), (107, 765225), (171, 478825), (179, 457425), (225, 363907), (285, 287295), (321, 255075), (475, 172377), (535, 153045), (537, 152475), (855, 95765), (895, 91485), (963, 85025), (1425, 57459), (1605, 51015), (1611, 50825), (2033, 40275), (2675, 30609), (2685, 30495), (3401, 24075), (4275, 19153), (4475, 18297), (4815, 17005), (6099, 13425), (8025, 10203), (8055, 10165)]