209225511

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:786

約数の個数: 80

約数和(自身を含む): 380540160

約数和(自身を除く): 171314649

約数列:

[1, 3, 9, 11, 17, 19, 27, 33, 51, 57, 81, 99, 153, 171, 187, 209, 297, 323, 459, 513, 561, 627, 727, 891, 969, 1377, 1539, 1683, 1881, 2181, 2907, 3553, 5049, 5643, 6543, 7997, 8721, 10659, 12359, 13813, 15147, 16929, 19629, 23991, 26163, 31977, 37077, 41439, 58887, 71973, 95931, 111231, 124317, 135949, 151943, 215919, 234821, 287793, 333693, 372951, 407847, 455829, 647757, 704463, 1001079, 1118853, 1223541, 1367487, 2113389, 2583031, 3670623, 4102461, 6340167, 7749093, 11011869, 12307383, 19020501, 23247279, 69741837, 209225511]

約数ペア:

[(1, 209225511), (3, 69741837), (9, 23247279), (11, 19020501), (17, 12307383), (19, 11011869), (27, 7749093), (33, 6340167), (51, 4102461), (57, 3670623), (81, 2583031), (99, 2113389), (153, 1367487), (171, 1223541), (187, 1118853), (209, 1001079), (297, 704463), (323, 647757), (459, 455829), (513, 407847), (561, 372951), (627, 333693), (727, 287793), (891, 234821), (969, 215919), (1377, 151943), (1539, 135949), (1683, 124317), (1881, 111231), (2181, 95931), (2907, 71973), (3553, 58887), (5049, 41439), (5643, 37077), (6543, 31977), (7997, 26163), (8721, 23991), (10659, 19629), (12359, 16929), (13813, 15147)]