208791680

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:242

約数の個数: 128

約数和(自身を含む): 523076400

約数和(自身を除く): 314284720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 73, 80, 82, 109, 128, 146, 160, 164, 205, 218, 292, 320, 328, 365, 410, 436, 545, 584, 640, 656, 730, 820, 872, 1090, 1168, 1312, 1460, 1640, 1744, 2180, 2336, 2624, 2920, 2993, 3280, 3488, 4360, 4469, 4672, 5248, 5840, 5986, 6560, 6976, 7957, 8720, 8938, 9344, 11680, 11972, 13120, 13952, 14965, 15914, 17440, 17876, 22345, 23360, 23944, 26240, 29930, 31828, 34880, 35752, 39785, 44690, 46720, 47888, 59860, 63656, 69760, 71504, 79570, 89380, 95776, 119720, 127312, 143008, 159140, 178760, 191552, 239440, 254624, 286016, 318280, 326237, 357520, 383104, 478880, 509248, 572032, 636560, 652474, 715040, 957760, 1018496, 1273120, 1304948, 1430080, 1631185, 1915520, 2546240, 2609896, 2860160, 3262370, 5092480, 5219792, 6524740, 10439584, 13049480, 20879168, 26098960, 41758336, 52197920, 104395840, 208791680]

約数ペア:

[(1, 208791680), (2, 104395840), (4, 52197920), (5, 41758336), (8, 26098960), (10, 20879168), (16, 13049480), (20, 10439584), (32, 6524740), (40, 5219792), (41, 5092480), (64, 3262370), (73, 2860160), (80, 2609896), (82, 2546240), (109, 1915520), (128, 1631185), (146, 1430080), (160, 1304948), (164, 1273120), (205, 1018496), (218, 957760), (292, 715040), (320, 652474), (328, 636560), (365, 572032), (410, 509248), (436, 478880), (545, 383104), (584, 357520), (640, 326237), (656, 318280), (730, 286016), (820, 254624), (872, 239440), (1090, 191552), (1168, 178760), (1312, 159140), (1460, 143008), (1640, 127312), (1744, 119720), (2180, 95776), (2336, 89380), (2624, 79570), (2920, 71504), (2993, 69760), (3280, 63656), (3488, 59860), (4360, 47888), (4469, 46720), (4672, 44690), (5248, 39785), (5840, 35752), (5986, 34880), (6560, 31828), (6976, 29930), (7957, 26240), (8720, 23944), (8938, 23360), (9344, 22345), (11680, 17876), (11972, 17440), (13120, 15914), (13952, 14965)]