1638661760

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{317}}^1$

素因数の和:574

約数の個数: 128

約数和(自身を含む): 4046066640

約数和(自身を除く): 2407404880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 197, 205, 317, 320, 328, 394, 410, 634, 640, 656, 788, 820, 985, 1268, 1312, 1576, 1585, 1640, 1970, 2536, 2624, 3152, 3170, 3280, 3940, 5072, 5248, 6304, 6340, 6560, 7880, 8077, 10144, 12608, 12680, 12997, 13120, 15760, 16154, 20288, 25216, 25360, 25994, 26240, 31520, 32308, 40385, 40576, 50720, 51988, 62449, 63040, 64616, 64985, 80770, 101440, 103976, 124898, 126080, 129232, 129970, 161540, 202880, 207952, 249796, 258464, 259940, 312245, 323080, 415904, 499592, 516928, 519880, 624490, 646160, 831808, 999184, 1033856, 1039760, 1248980, 1292320, 1663616, 1998368, 2079520, 2497960, 2560409, 2584640, 3996736, 4159040, 4995920, 5120818, 5169280, 7993472, 8318080, 9991840, 10241636, 12802045, 19983680, 20483272, 25604090, 39967360, 40966544, 51208180, 81933088, 102416360, 163866176, 204832720, 327732352, 409665440, 819330880, 1638661760]

約数ペア:

[(1, 1638661760), (2, 819330880), (4, 409665440), (5, 327732352), (8, 204832720), (10, 163866176), (16, 102416360), (20, 81933088), (32, 51208180), (40, 40966544), (41, 39967360), (64, 25604090), (80, 20483272), (82, 19983680), (128, 12802045), (160, 10241636), (164, 9991840), (197, 8318080), (205, 7993472), (317, 5169280), (320, 5120818), (328, 4995920), (394, 4159040), (410, 3996736), (634, 2584640), (640, 2560409), (656, 2497960), (788, 2079520), (820, 1998368), (985, 1663616), (1268, 1292320), (1312, 1248980), (1576, 1039760), (1585, 1033856), (1640, 999184), (1970, 831808), (2536, 646160), (2624, 624490), (3152, 519880), (3170, 516928), (3280, 499592), (3940, 415904), (5072, 323080), (5248, 312245), (6304, 259940), (6340, 258464), (6560, 249796), (7880, 207952), (8077, 202880), (10144, 161540), (12608, 129970), (12680, 129232), (12997, 126080), (13120, 124898), (15760, 103976), (16154, 101440), (20288, 80770), (25216, 64985), (25360, 64616), (25994, 63040), (26240, 62449), (31520, 51988), (32308, 50720), (40385, 40576)]