39938787

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 70507008

約数和(自身を除く): 30568221

約数列:

[1, 3, 7, 9, 21, 23, 43, 63, 69, 129, 161, 207, 301, 387, 483, 641, 903, 989, 1449, 1923, 2709, 2967, 4487, 5769, 6923, 8901, 13461, 14743, 20769, 27563, 40383, 44229, 62307, 82689, 103201, 132687, 192941, 248067, 309603, 578823, 633949, 928809, 1736469, 1901847, 4437643, 5705541, 13312929, 39938787]

約数ペア:

[(1, 39938787), (3, 13312929), (7, 5705541), (9, 4437643), (21, 1901847), (23, 1736469), (43, 928809), (63, 633949), (69, 578823), (129, 309603), (161, 248067), (207, 192941), (301, 132687), (387, 103201), (483, 82689), (641, 62307), (903, 44229), (989, 40383), (1449, 27563), (1923, 20769), (2709, 14743), (2967, 13461), (4487, 8901), (5769, 6923)]