20560450

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 39970656

約数和(自身を除く): 19410206

約数列:

[1, 2, 5, 10, 25, 43, 50, 73, 86, 131, 146, 215, 262, 365, 430, 655, 730, 1075, 1310, 1825, 2150, 3139, 3275, 3650, 5633, 6278, 6550, 9563, 11266, 15695, 19126, 28165, 31390, 47815, 56330, 78475, 95630, 140825, 156950, 239075, 281650, 411209, 478150, 822418, 2056045, 4112090, 10280225, 20560450]

約数ペア:

[(1, 20560450), (2, 10280225), (5, 4112090), (10, 2056045), (25, 822418), (43, 478150), (50, 411209), (73, 281650), (86, 239075), (131, 156950), (146, 140825), (215, 95630), (262, 78475), (365, 56330), (430, 47815), (655, 31390), (730, 28165), (1075, 19126), (1310, 15695), (1825, 11266), (2150, 9563), (3139, 6550), (3275, 6278), (3650, 5633)]