21648480

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1$

素因数の和:421

約数の個数: 192

約数和(自身を含む): 82736640

約数和(自身を除く): 61088160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 51, 56, 60, 68, 70, 80, 84, 85, 96, 102, 105, 112, 119, 120, 136, 140, 160, 168, 170, 204, 210, 224, 238, 240, 255, 272, 280, 336, 340, 357, 379, 408, 420, 476, 480, 510, 544, 560, 595, 672, 680, 714, 758, 816, 840, 952, 1020, 1120, 1137, 1190, 1360, 1428, 1516, 1632, 1680, 1785, 1895, 1904, 2040, 2274, 2380, 2653, 2720, 2856, 3032, 3360, 3570, 3790, 3808, 4080, 4548, 4760, 5306, 5685, 5712, 6064, 6443, 7140, 7580, 7959, 8160, 9096, 9520, 10612, 11370, 11424, 12128, 12886, 13265, 14280, 15160, 15918, 18192, 19040, 19329, 21224, 22740, 25772, 26530, 28560, 30320, 31836, 32215, 36384, 38658, 39795, 42448, 45101, 45480, 51544, 53060, 57120, 60640, 63672, 64430, 77316, 79590, 84896, 90202, 90960, 96645, 103088, 106120, 127344, 128860, 135303, 154632, 159180, 180404, 181920, 193290, 206176, 212240, 225505, 254688, 257720, 270606, 309264, 318360, 360808, 386580, 424480, 451010, 515440, 541212, 618528, 636720, 676515, 721616, 773160, 902020, 1030880, 1082424, 1273440, 1353030, 1443232, 1546320, 1804040, 2164848, 2706060, 3092640, 3608080, 4329696, 5412120, 7216160, 10824240, 21648480]

約数ペア:

[(1, 21648480), (2, 10824240), (3, 7216160), (4, 5412120), (5, 4329696), (6, 3608080), (7, 3092640), (8, 2706060), (10, 2164848), (12, 1804040), (14, 1546320), (15, 1443232), (16, 1353030), (17, 1273440), (20, 1082424), (21, 1030880), (24, 902020), (28, 773160), (30, 721616), (32, 676515), (34, 636720), (35, 618528), (40, 541212), (42, 515440), (48, 451010), (51, 424480), (56, 386580), (60, 360808), (68, 318360), (70, 309264), (80, 270606), (84, 257720), (85, 254688), (96, 225505), (102, 212240), (105, 206176), (112, 193290), (119, 181920), (120, 180404), (136, 159180), (140, 154632), (160, 135303), (168, 128860), (170, 127344), (204, 106120), (210, 103088), (224, 96645), (238, 90960), (240, 90202), (255, 84896), (272, 79590), (280, 77316), (336, 64430), (340, 63672), (357, 60640), (379, 57120), (408, 53060), (420, 51544), (476, 45480), (480, 45101), (510, 42448), (544, 39795), (560, 38658), (595, 36384), (672, 32215), (680, 31836), (714, 30320), (758, 28560), (816, 26530), (840, 25772), (952, 22740), (1020, 21224), (1120, 19329), (1137, 19040), (1190, 18192), (1360, 15918), (1428, 15160), (1516, 14280), (1632, 13265), (1680, 12886), (1785, 12128), (1895, 11424), (1904, 11370), (2040, 10612), (2274, 9520), (2380, 9096), (2653, 8160), (2720, 7959), (2856, 7580), (3032, 7140), (3360, 6443), (3570, 6064), (3790, 5712), (3808, 5685), (4080, 5306), (4548, 4760)]