389866880

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{997}}^1$

素因数の和:1076

約数の個数: 128

約数和(自身を含む): 1026103680

約数和(自身を除く): 636236800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 64, 65, 80, 94, 104, 128, 130, 160, 188, 208, 235, 260, 320, 376, 416, 470, 520, 611, 640, 752, 832, 940, 997, 1040, 1222, 1504, 1664, 1880, 1994, 2080, 2444, 3008, 3055, 3760, 3988, 4160, 4888, 4985, 6016, 6110, 7520, 7976, 8320, 9776, 9970, 12220, 12961, 15040, 15952, 19552, 19940, 24440, 25922, 30080, 31904, 39104, 39880, 46859, 48880, 51844, 63808, 64805, 78208, 79760, 93718, 97760, 103688, 127616, 129610, 159520, 187436, 195520, 207376, 234295, 259220, 319040, 374872, 391040, 414752, 468590, 518440, 609167, 638080, 749744, 829504, 937180, 1036880, 1218334, 1499488, 1659008, 1874360, 2073760, 2436668, 2998976, 3045835, 3748720, 4147520, 4873336, 5997952, 6091670, 7497440, 8295040, 9746672, 12183340, 14994880, 19493344, 24366680, 29989760, 38986688, 48733360, 77973376, 97466720, 194933440, 389866880]

約数ペア:

[(1, 389866880), (2, 194933440), (4, 97466720), (5, 77973376), (8, 48733360), (10, 38986688), (13, 29989760), (16, 24366680), (20, 19493344), (26, 14994880), (32, 12183340), (40, 9746672), (47, 8295040), (52, 7497440), (64, 6091670), (65, 5997952), (80, 4873336), (94, 4147520), (104, 3748720), (128, 3045835), (130, 2998976), (160, 2436668), (188, 2073760), (208, 1874360), (235, 1659008), (260, 1499488), (320, 1218334), (376, 1036880), (416, 937180), (470, 829504), (520, 749744), (611, 638080), (640, 609167), (752, 518440), (832, 468590), (940, 414752), (997, 391040), (1040, 374872), (1222, 319040), (1504, 259220), (1664, 234295), (1880, 207376), (1994, 195520), (2080, 187436), (2444, 159520), (3008, 129610), (3055, 127616), (3760, 103688), (3988, 97760), (4160, 93718), (4888, 79760), (4985, 78208), (6016, 64805), (6110, 63808), (7520, 51844), (7976, 48880), (8320, 46859), (9776, 39880), (9970, 39104), (12220, 31904), (12961, 30080), (15040, 25922), (15952, 24440), (19552, 19940)]