281662857

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{601}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 479326848

約数和(自身を除く): 197663991

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 173, 301, 387, 519, 601, 903, 1211, 1557, 1803, 2709, 3633, 4207, 5409, 7439, 10899, 12621, 22317, 25843, 37863, 52073, 66951, 77529, 103973, 156219, 180901, 232587, 311919, 468657, 542703, 727811, 935757, 1628109, 2183433, 4470839, 6550299, 13412517, 31295873, 40237551, 93887619, 281662857]

約数ペア:

[(1, 281662857), (3, 93887619), (7, 40237551), (9, 31295873), (21, 13412517), (43, 6550299), (63, 4470839), (129, 2183433), (173, 1628109), (301, 935757), (387, 727811), (519, 542703), (601, 468657), (903, 311919), (1211, 232587), (1557, 180901), (1803, 156219), (2709, 103973), (3633, 77529), (4207, 66951), (5409, 52073), (7439, 37863), (10899, 25843), (12621, 22317)]