206561680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:249

約数の個数: 160

約数和(自身を含む): 549964800

約数和(自身を除く): 343403120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 43, 52, 62, 65, 80, 86, 104, 124, 130, 149, 155, 172, 208, 215, 248, 260, 298, 310, 344, 403, 430, 496, 520, 559, 596, 620, 688, 745, 806, 860, 1040, 1118, 1192, 1240, 1333, 1490, 1612, 1720, 1937, 2015, 2236, 2384, 2480, 2666, 2795, 2980, 3224, 3440, 3874, 4030, 4472, 4619, 5332, 5590, 5960, 6407, 6448, 6665, 7748, 8060, 8944, 9238, 9685, 10664, 11180, 11920, 12814, 13330, 15496, 16120, 17329, 18476, 19370, 21328, 22360, 23095, 25628, 26660, 30992, 32035, 32240, 34658, 36952, 38740, 44720, 46190, 51256, 53320, 60047, 64070, 69316, 73904, 77480, 83291, 86645, 92380, 102512, 106640, 120094, 128140, 138632, 154960, 166582, 173290, 184760, 198617, 240188, 256280, 277264, 300235, 333164, 346580, 369520, 397234, 416455, 480376, 512560, 600470, 666328, 693160, 794468, 832910, 960752, 993085, 1200940, 1332656, 1386320, 1588936, 1665820, 1986170, 2401880, 2582021, 3177872, 3331640, 3972340, 4803760, 5164042, 6663280, 7944680, 10328084, 12910105, 15889360, 20656168, 25820210, 41312336, 51640420, 103280840, 206561680]

約数ペア:

[(1, 206561680), (2, 103280840), (4, 51640420), (5, 41312336), (8, 25820210), (10, 20656168), (13, 15889360), (16, 12910105), (20, 10328084), (26, 7944680), (31, 6663280), (40, 5164042), (43, 4803760), (52, 3972340), (62, 3331640), (65, 3177872), (80, 2582021), (86, 2401880), (104, 1986170), (124, 1665820), (130, 1588936), (149, 1386320), (155, 1332656), (172, 1200940), (208, 993085), (215, 960752), (248, 832910), (260, 794468), (298, 693160), (310, 666328), (344, 600470), (403, 512560), (430, 480376), (496, 416455), (520, 397234), (559, 369520), (596, 346580), (620, 333164), (688, 300235), (745, 277264), (806, 256280), (860, 240188), (1040, 198617), (1118, 184760), (1192, 173290), (1240, 166582), (1333, 154960), (1490, 138632), (1612, 128140), (1720, 120094), (1937, 106640), (2015, 102512), (2236, 92380), (2384, 86645), (2480, 83291), (2666, 77480), (2795, 73904), (2980, 69316), (3224, 64070), (3440, 60047), (3874, 53320), (4030, 51256), (4472, 46190), (4619, 44720), (5332, 38740), (5590, 36952), (5960, 34658), (6407, 32240), (6448, 32035), (6665, 30992), (7748, 26660), (8060, 25628), (8944, 23095), (9238, 22360), (9685, 21328), (10664, 19370), (11180, 18476), (11920, 17329), (12814, 16120), (13330, 15496)]