16780275

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 32904144

約数和(自身を除く): 16123869

約数列:

[1, 3, 5, 9, 15, 17, 25, 41, 45, 51, 75, 85, 107, 123, 153, 205, 225, 255, 321, 369, 425, 535, 615, 697, 765, 963, 1025, 1275, 1605, 1819, 1845, 2091, 2675, 3075, 3485, 3825, 4387, 4815, 5457, 6273, 8025, 9095, 9225, 10455, 13161, 16371, 17425, 21935, 24075, 27285, 31365, 39483, 45475, 52275, 65805, 74579, 81855, 109675, 136425, 156825, 197415, 223737, 329025, 372895, 409275, 671211, 987075, 1118685, 1864475, 3356055, 5593425, 16780275]

約数ペア:

[(1, 16780275), (3, 5593425), (5, 3356055), (9, 1864475), (15, 1118685), (17, 987075), (25, 671211), (41, 409275), (45, 372895), (51, 329025), (75, 223737), (85, 197415), (107, 156825), (123, 136425), (153, 109675), (205, 81855), (225, 74579), (255, 65805), (321, 52275), (369, 45475), (425, 39483), (535, 31365), (615, 27285), (697, 24075), (765, 21935), (963, 17425), (1025, 16371), (1275, 13161), (1605, 10455), (1819, 9225), (1845, 9095), (2091, 8025), (2675, 6273), (3075, 5457), (3485, 4815), (3825, 4387)]