21137880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 68198400

約数和(自身を除く): 47060520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 73, 76, 95, 114, 120, 127, 146, 152, 190, 219, 228, 254, 285, 292, 365, 380, 381, 438, 456, 508, 570, 584, 635, 730, 760, 762, 876, 1016, 1095, 1140, 1270, 1387, 1460, 1524, 1752, 1905, 2190, 2280, 2413, 2540, 2774, 2920, 3048, 3810, 4161, 4380, 4826, 5080, 5548, 6935, 7239, 7620, 8322, 8760, 9271, 9652, 11096, 12065, 13870, 14478, 15240, 16644, 18542, 19304, 20805, 24130, 27740, 27813, 28956, 33288, 36195, 37084, 41610, 46355, 48260, 55480, 55626, 57912, 72390, 74168, 83220, 92710, 96520, 111252, 139065, 144780, 166440, 176149, 185420, 222504, 278130, 289560, 352298, 370840, 528447, 556260, 704596, 880745, 1056894, 1112520, 1409192, 1761490, 2113788, 2642235, 3522980, 4227576, 5284470, 7045960, 10568940, 21137880]

約数ペア:

[(1, 21137880), (2, 10568940), (3, 7045960), (4, 5284470), (5, 4227576), (6, 3522980), (8, 2642235), (10, 2113788), (12, 1761490), (15, 1409192), (19, 1112520), (20, 1056894), (24, 880745), (30, 704596), (38, 556260), (40, 528447), (57, 370840), (60, 352298), (73, 289560), (76, 278130), (95, 222504), (114, 185420), (120, 176149), (127, 166440), (146, 144780), (152, 139065), (190, 111252), (219, 96520), (228, 92710), (254, 83220), (285, 74168), (292, 72390), (365, 57912), (380, 55626), (381, 55480), (438, 48260), (456, 46355), (508, 41610), (570, 37084), (584, 36195), (635, 33288), (730, 28956), (760, 27813), (762, 27740), (876, 24130), (1016, 20805), (1095, 19304), (1140, 18542), (1270, 16644), (1387, 15240), (1460, 14478), (1524, 13870), (1752, 12065), (1905, 11096), (2190, 9652), (2280, 9271), (2413, 8760), (2540, 8322), (2774, 7620), (2920, 7239), (3048, 6935), (3810, 5548), (4161, 5080), (4380, 4826)]