256899440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:295

約数の個数: 160

約数和(自身を含む): 713954304

約数和(自身を除く): 457054864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 67, 70, 80, 82, 112, 134, 140, 164, 167, 205, 268, 280, 287, 328, 334, 335, 410, 469, 536, 560, 574, 656, 668, 670, 820, 835, 938, 1072, 1148, 1169, 1336, 1340, 1435, 1640, 1670, 1876, 2296, 2338, 2345, 2672, 2680, 2747, 2870, 3280, 3340, 3752, 4592, 4676, 4690, 5360, 5494, 5740, 5845, 6680, 6847, 7504, 9352, 9380, 10988, 11189, 11480, 11690, 13360, 13694, 13735, 18704, 18760, 19229, 21976, 22378, 22960, 23380, 27388, 27470, 34235, 37520, 38458, 43952, 44756, 46760, 47929, 54776, 54940, 55945, 68470, 76916, 78323, 89512, 93520, 95858, 96145, 109552, 109880, 111890, 136940, 153832, 156646, 179024, 191716, 192290, 219760, 223780, 239645, 273880, 307664, 313292, 383432, 384580, 391615, 447560, 458749, 479290, 547760, 626584, 766864, 769160, 783230, 895120, 917498, 958580, 1253168, 1538320, 1566460, 1834996, 1917160, 2293745, 3132920, 3211243, 3669992, 3834320, 4587490, 6265840, 6422486, 7339984, 9174980, 12844972, 16056215, 18349960, 25689944, 32112430, 36699920, 51379888, 64224860, 128449720, 256899440]

約数ペア:

[(1, 256899440), (2, 128449720), (4, 64224860), (5, 51379888), (7, 36699920), (8, 32112430), (10, 25689944), (14, 18349960), (16, 16056215), (20, 12844972), (28, 9174980), (35, 7339984), (40, 6422486), (41, 6265840), (56, 4587490), (67, 3834320), (70, 3669992), (80, 3211243), (82, 3132920), (112, 2293745), (134, 1917160), (140, 1834996), (164, 1566460), (167, 1538320), (205, 1253168), (268, 958580), (280, 917498), (287, 895120), (328, 783230), (334, 769160), (335, 766864), (410, 626584), (469, 547760), (536, 479290), (560, 458749), (574, 447560), (656, 391615), (668, 384580), (670, 383432), (820, 313292), (835, 307664), (938, 273880), (1072, 239645), (1148, 223780), (1169, 219760), (1336, 192290), (1340, 191716), (1435, 179024), (1640, 156646), (1670, 153832), (1876, 136940), (2296, 111890), (2338, 109880), (2345, 109552), (2672, 96145), (2680, 95858), (2747, 93520), (2870, 89512), (3280, 78323), (3340, 76916), (3752, 68470), (4592, 55945), (4676, 54940), (4690, 54776), (5360, 47929), (5494, 46760), (5740, 44756), (5845, 43952), (6680, 38458), (6847, 37520), (7504, 34235), (9352, 27470), (9380, 27388), (10988, 23380), (11189, 22960), (11480, 22378), (11690, 21976), (13360, 19229), (13694, 18760), (13735, 18704)]