20899120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1$

素因数の和:179

約数の個数: 120

約数和(自身を含む): 56996352

約数和(自身を除く): 36097232

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 121, 127, 136, 170, 176, 187, 220, 242, 254, 272, 340, 374, 440, 484, 508, 605, 635, 680, 748, 880, 935, 968, 1016, 1210, 1270, 1360, 1397, 1496, 1870, 1936, 2032, 2057, 2159, 2420, 2540, 2794, 2992, 3740, 4114, 4318, 4840, 5080, 5588, 6985, 7480, 8228, 8636, 9680, 10160, 10285, 10795, 11176, 13970, 14960, 15367, 16456, 17272, 20570, 21590, 22352, 23749, 27940, 30734, 32912, 34544, 41140, 43180, 47498, 55880, 61468, 76835, 82280, 86360, 94996, 111760, 118745, 122936, 153670, 164560, 172720, 189992, 237490, 245872, 261239, 307340, 379984, 474980, 522478, 614680, 949960, 1044956, 1229360, 1306195, 1899920, 2089912, 2612390, 4179824, 5224780, 10449560, 20899120]

約数ペア:

[(1, 20899120), (2, 10449560), (4, 5224780), (5, 4179824), (8, 2612390), (10, 2089912), (11, 1899920), (16, 1306195), (17, 1229360), (20, 1044956), (22, 949960), (34, 614680), (40, 522478), (44, 474980), (55, 379984), (68, 307340), (80, 261239), (85, 245872), (88, 237490), (110, 189992), (121, 172720), (127, 164560), (136, 153670), (170, 122936), (176, 118745), (187, 111760), (220, 94996), (242, 86360), (254, 82280), (272, 76835), (340, 61468), (374, 55880), (440, 47498), (484, 43180), (508, 41140), (605, 34544), (635, 32912), (680, 30734), (748, 27940), (880, 23749), (935, 22352), (968, 21590), (1016, 20570), (1210, 17272), (1270, 16456), (1360, 15367), (1397, 14960), (1496, 13970), (1870, 11176), (1936, 10795), (2032, 10285), (2057, 10160), (2159, 9680), (2420, 8636), (2540, 8228), (2794, 7480), (2992, 6985), (3740, 5588), (4114, 5080), (4318, 4840)]