21811083520

素因数分解:

$2^8\times 5^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{1291}}^1$

素因数の和:1576

約数の個数: 144

約数和(自身を含む): 53334566208

約数和(自身を除く): 31523482688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 197, 256, 268, 320, 335, 394, 536, 640, 670, 788, 985, 1072, 1280, 1291, 1340, 1576, 1970, 2144, 2582, 2680, 3152, 3940, 4288, 5164, 5360, 6304, 6455, 7880, 8576, 10328, 10720, 12608, 12910, 13199, 15760, 17152, 20656, 21440, 25216, 25820, 26398, 31520, 41312, 42880, 50432, 51640, 52796, 63040, 65995, 82624, 85760, 86497, 103280, 105592, 126080, 131990, 165248, 172994, 206560, 211184, 252160, 254327, 263980, 330496, 345988, 413120, 422368, 432485, 508654, 527960, 691976, 826240, 844736, 864970, 1017308, 1055920, 1271635, 1383952, 1652480, 1689472, 1729940, 2034616, 2111840, 2543270, 2767904, 3378944, 3459880, 4069232, 4223680, 5086540, 5535808, 6919760, 8138464, 8447360, 10173080, 11071616, 13839520, 16276928, 16894720, 17039909, 20346160, 22143232, 27679040, 32553856, 34079818, 40692320, 55358080, 65107712, 68159636, 81384640, 85199545, 110716160, 136319272, 162769280, 170399090, 272638544, 325538560, 340798180, 545277088, 681596360, 1090554176, 1363192720, 2181108352, 2726385440, 4362216704, 5452770880, 10905541760, 21811083520]

約数ペア:

[(1, 21811083520), (2, 10905541760), (4, 5452770880), (5, 4362216704), (8, 2726385440), (10, 2181108352), (16, 1363192720), (20, 1090554176), (32, 681596360), (40, 545277088), (64, 340798180), (67, 325538560), (80, 272638544), (128, 170399090), (134, 162769280), (160, 136319272), (197, 110716160), (256, 85199545), (268, 81384640), (320, 68159636), (335, 65107712), (394, 55358080), (536, 40692320), (640, 34079818), (670, 32553856), (788, 27679040), (985, 22143232), (1072, 20346160), (1280, 17039909), (1291, 16894720), (1340, 16276928), (1576, 13839520), (1970, 11071616), (2144, 10173080), (2582, 8447360), (2680, 8138464), (3152, 6919760), (3940, 5535808), (4288, 5086540), (5164, 4223680), (5360, 4069232), (6304, 3459880), (6455, 3378944), (7880, 2767904), (8576, 2543270), (10328, 2111840), (10720, 2034616), (12608, 1729940), (12910, 1689472), (13199, 1652480), (15760, 1383952), (17152, 1271635), (20656, 1055920), (21440, 1017308), (25216, 864970), (25820, 844736), (26398, 826240), (31520, 691976), (41312, 527960), (42880, 508654), (50432, 432485), (51640, 422368), (52796, 413120), (63040, 345988), (65995, 330496), (82624, 263980), (85760, 254327), (86497, 252160), (103280, 211184), (105592, 206560), (126080, 172994), (131990, 165248)]