251885781

素因数分解:

$3^5\times 7^1\times {\mathrm{373}}^1\times {\mathrm{397}}^1$

素因数の和:792

約数の個数: 48

約数和(自身を含む): 433457024

約数和(自身を除く): 181571243

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 373, 397, 567, 1119, 1191, 1701, 2611, 2779, 3357, 3573, 7833, 8337, 10071, 10719, 23499, 25011, 30213, 32157, 70497, 75033, 90639, 96471, 148081, 211491, 225099, 444243, 634473, 675297, 1036567, 1332729, 3109701, 3998187, 9329103, 11994561, 27987309, 35983683, 83961927, 251885781]

約数ペア:

[(1, 251885781), (3, 83961927), (7, 35983683), (9, 27987309), (21, 11994561), (27, 9329103), (63, 3998187), (81, 3109701), (189, 1332729), (243, 1036567), (373, 675297), (397, 634473), (567, 444243), (1119, 225099), (1191, 211491), (1701, 148081), (2611, 96471), (2779, 90639), (3357, 75033), (3573, 70497), (7833, 32157), (8337, 30213), (10071, 25011), (10719, 23499)]