1255291880

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{241}}^1\times {\mathrm{661}}^1$

素因数の和:1110

約数の個数: 64

約数和(自身を含む): 2854835280

約数和(自身を除く): 1599543400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 241, 394, 482, 661, 788, 964, 985, 1205, 1322, 1576, 1928, 1970, 2410, 2644, 3305, 3940, 4820, 5288, 6610, 7880, 9640, 13220, 26440, 47477, 94954, 130217, 159301, 189908, 237385, 260434, 318602, 379816, 474770, 520868, 637204, 651085, 796505, 949540, 1041736, 1274408, 1302170, 1593010, 1899080, 2604340, 3186020, 5208680, 6372040, 31382297, 62764594, 125529188, 156911485, 251058376, 313822970, 627645940, 1255291880]

約数ペア:

[(1, 1255291880), (2, 627645940), (4, 313822970), (5, 251058376), (8, 156911485), (10, 125529188), (20, 62764594), (40, 31382297), (197, 6372040), (241, 5208680), (394, 3186020), (482, 2604340), (661, 1899080), (788, 1593010), (964, 1302170), (985, 1274408), (1205, 1041736), (1322, 949540), (1576, 796505), (1928, 651085), (1970, 637204), (2410, 520868), (2644, 474770), (3305, 379816), (3940, 318602), (4820, 260434), (5288, 237385), (6610, 189908), (7880, 159301), (9640, 130217), (13220, 94954), (26440, 47477)]