19811001

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 32237568

約数和(自身を除く): 12426567

約数列:

[1, 3, 7, 17, 21, 51, 119, 211, 263, 357, 633, 789, 1477, 1841, 3587, 4431, 4471, 5523, 10761, 13413, 25109, 31297, 55493, 75327, 93891, 166479, 388451, 943381, 1165353, 2830143, 6603667, 19811001]

約数ペア:

[(1, 19811001), (3, 6603667), (7, 2830143), (17, 1165353), (21, 943381), (51, 388451), (119, 166479), (211, 93891), (263, 75327), (357, 55493), (633, 31297), (789, 25109), (1477, 13413), (1841, 10761), (3587, 5523), (4431, 4471)]