81247845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1979}}^1$

素因数の和:2034

約数の個数: 64

約数和(自身を含む): 164229120

約数和(自身を除く): 82981275

約数列:

[1, 3, 5, 7, 15, 17, 21, 23, 35, 51, 69, 85, 105, 115, 119, 161, 255, 345, 357, 391, 483, 595, 805, 1173, 1785, 1955, 1979, 2415, 2737, 5865, 5937, 8211, 9895, 13685, 13853, 29685, 33643, 41055, 41559, 45517, 69265, 100929, 136551, 168215, 207795, 227585, 235501, 318619, 504645, 682755, 706503, 773789, 955857, 1177505, 1593095, 2321367, 3532515, 3868945, 4779285, 5416523, 11606835, 16249569, 27082615, 81247845]

約数ペア:

[(1, 81247845), (3, 27082615), (5, 16249569), (7, 11606835), (15, 5416523), (17, 4779285), (21, 3868945), (23, 3532515), (35, 2321367), (51, 1593095), (69, 1177505), (85, 955857), (105, 773789), (115, 706503), (119, 682755), (161, 504645), (255, 318619), (345, 235501), (357, 227585), (391, 207795), (483, 168215), (595, 136551), (805, 100929), (1173, 69265), (1785, 45517), (1955, 41559), (1979, 41055), (2415, 33643), (2737, 29685), (5865, 13853), (5937, 13685), (8211, 9895)]