201989988

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{599}}^1$

素因数の和:674

約数の個数: 144

約数和(自身を含む): 589680000

約数和(自身を除く): 387690012

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 19, 29, 34, 36, 38, 51, 57, 58, 68, 76, 87, 102, 114, 116, 153, 171, 174, 204, 228, 261, 306, 323, 342, 348, 493, 522, 551, 599, 612, 646, 684, 969, 986, 1044, 1102, 1198, 1292, 1479, 1653, 1797, 1938, 1972, 2204, 2396, 2907, 2958, 3306, 3594, 3876, 4437, 4959, 5391, 5814, 5916, 6612, 7188, 8874, 9367, 9918, 10183, 10782, 11381, 11628, 17371, 17748, 18734, 19836, 20366, 21564, 22762, 28101, 30549, 34143, 34742, 37468, 40732, 45524, 52113, 56202, 61098, 68286, 69484, 84303, 91647, 102429, 104226, 112404, 122196, 136572, 156339, 168606, 183294, 193477, 204858, 208452, 295307, 312678, 330049, 337212, 366588, 386954, 409716, 580431, 590614, 625356, 660098, 773908, 885921, 990147, 1160862, 1181228, 1320196, 1741293, 1771842, 1980294, 2321724, 2657763, 2970441, 3482586, 3543684, 3960588, 5315526, 5610833, 5940882, 6965172, 10631052, 11221666, 11881764, 16832499, 22443332, 33664998, 50497497, 67329996, 100994994, 201989988]

約数ペア:

[(1, 201989988), (2, 100994994), (3, 67329996), (4, 50497497), (6, 33664998), (9, 22443332), (12, 16832499), (17, 11881764), (18, 11221666), (19, 10631052), (29, 6965172), (34, 5940882), (36, 5610833), (38, 5315526), (51, 3960588), (57, 3543684), (58, 3482586), (68, 2970441), (76, 2657763), (87, 2321724), (102, 1980294), (114, 1771842), (116, 1741293), (153, 1320196), (171, 1181228), (174, 1160862), (204, 990147), (228, 885921), (261, 773908), (306, 660098), (323, 625356), (342, 590614), (348, 580431), (493, 409716), (522, 386954), (551, 366588), (599, 337212), (612, 330049), (646, 312678), (684, 295307), (969, 208452), (986, 204858), (1044, 193477), (1102, 183294), (1198, 168606), (1292, 156339), (1479, 136572), (1653, 122196), (1797, 112404), (1938, 104226), (1972, 102429), (2204, 91647), (2396, 84303), (2907, 69484), (2958, 68286), (3306, 61098), (3594, 56202), (3876, 52113), (4437, 45524), (4959, 40732), (5391, 37468), (5814, 34742), (5916, 34143), (6612, 30549), (7188, 28101), (8874, 22762), (9367, 21564), (9918, 20366), (10183, 19836), (10782, 18734), (11381, 17748), (11628, 17371)]