251948949

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{653}}^1\times {\mathrm{967}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 405166080

約数和(自身を除く): 153217131

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 653, 967, 1959, 2901, 4571, 6769, 12407, 13713, 18373, 20307, 37221, 55119, 86849, 128611, 260547, 385833, 631451, 1894353, 4420157, 11997569, 13260471, 35992707, 83982983, 251948949]

約数ペア:

[(1, 251948949), (3, 83982983), (7, 35992707), (19, 13260471), (21, 11997569), (57, 4420157), (133, 1894353), (399, 631451), (653, 385833), (967, 260547), (1959, 128611), (2901, 86849), (4571, 55119), (6769, 37221), (12407, 20307), (13713, 18373)]