20147394880

素因数分解:

$2^6\times 5^1\times {\mathrm{197}}^1\times {\mathrm{401}}^1\times {\mathrm{797}}^1$

素因数の和:1412

約数の個数: 112

約数和(自身を含む): 48400417296

約数和(自身を除く): 28253022416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 197, 320, 394, 401, 788, 797, 802, 985, 1576, 1594, 1604, 1970, 2005, 3152, 3188, 3208, 3940, 3985, 4010, 6304, 6376, 6416, 7880, 7970, 8020, 12608, 12752, 12832, 15760, 15940, 16040, 25504, 25664, 31520, 31880, 32080, 51008, 63040, 63760, 64160, 78997, 127520, 128320, 157009, 157994, 255040, 314018, 315988, 319597, 394985, 628036, 631976, 639194, 785045, 789970, 1256072, 1263952, 1278388, 1570090, 1579940, 1597985, 2512144, 2527904, 2556776, 3140180, 3159880, 3195970, 5024288, 5055808, 5113552, 6280360, 6319760, 6391940, 10048576, 10227104, 12560720, 12639520, 12783880, 20454208, 25121440, 25279040, 25567760, 50242880, 51135520, 62960609, 102271040, 125921218, 251842436, 314803045, 503684872, 629606090, 1007369744, 1259212180, 2014739488, 2518424360, 4029478976, 5036848720, 10073697440, 20147394880]

約数ペア:

[(1, 20147394880), (2, 10073697440), (4, 5036848720), (5, 4029478976), (8, 2518424360), (10, 2014739488), (16, 1259212180), (20, 1007369744), (32, 629606090), (40, 503684872), (64, 314803045), (80, 251842436), (160, 125921218), (197, 102271040), (320, 62960609), (394, 51135520), (401, 50242880), (788, 25567760), (797, 25279040), (802, 25121440), (985, 20454208), (1576, 12783880), (1594, 12639520), (1604, 12560720), (1970, 10227104), (2005, 10048576), (3152, 6391940), (3188, 6319760), (3208, 6280360), (3940, 5113552), (3985, 5055808), (4010, 5024288), (6304, 3195970), (6376, 3159880), (6416, 3140180), (7880, 2556776), (7970, 2527904), (8020, 2512144), (12608, 1597985), (12752, 1579940), (12832, 1570090), (15760, 1278388), (15940, 1263952), (16040, 1256072), (25504, 789970), (25664, 785045), (31520, 639194), (31880, 631976), (32080, 628036), (51008, 394985), (63040, 319597), (63760, 315988), (64160, 314018), (78997, 255040), (127520, 157994), (128320, 157009)]