81668745

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4153}}^1$

素因数の和:4206

約数の個数: 48

約数和(自身を含む): 155525760

約数和(自身を除く): 73857015

約数列:

[1, 3, 5, 9, 15, 19, 23, 45, 57, 69, 95, 115, 171, 207, 285, 345, 437, 855, 1035, 1311, 2185, 3933, 4153, 6555, 12459, 19665, 20765, 37377, 62295, 78907, 95519, 186885, 236721, 286557, 394535, 477595, 710163, 859671, 1183605, 1432785, 1814861, 3550815, 4298355, 5444583, 9074305, 16333749, 27222915, 81668745]

約数ペア:

[(1, 81668745), (3, 27222915), (5, 16333749), (9, 9074305), (15, 5444583), (19, 4298355), (23, 3550815), (45, 1814861), (57, 1432785), (69, 1183605), (95, 859671), (115, 710163), (171, 477595), (207, 394535), (285, 286557), (345, 236721), (437, 186885), (855, 95519), (1035, 78907), (1311, 62295), (2185, 37377), (3933, 20765), (4153, 19665), (6555, 12459)]