251188539

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{1621}}^1$

素因数の和:1835

約数の個数: 32

約数和(自身を含む): 393639936

約数和(自身を除く): 142451397

約数列:

[1, 3, 7, 21, 47, 141, 157, 329, 471, 987, 1099, 1621, 3297, 4863, 7379, 11347, 22137, 34041, 51653, 76187, 154959, 228561, 254497, 533309, 763491, 1599927, 1781479, 5344437, 11961359, 35884077, 83729513, 251188539]

約数ペア:

[(1, 251188539), (3, 83729513), (7, 35884077), (21, 11961359), (47, 5344437), (141, 1781479), (157, 1599927), (329, 763491), (471, 533309), (987, 254497), (1099, 228561), (1621, 154959), (3297, 76187), (4863, 51653), (7379, 34041), (11347, 22137)]