18722913

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 28283904

約数和(自身を除く): 9560991

約数列:

[1, 3, 11, 33, 61, 71, 131, 183, 213, 393, 671, 781, 1441, 2013, 2343, 4323, 4331, 7991, 9301, 12993, 23973, 27903, 47641, 87901, 102311, 142923, 263703, 306933, 567361, 1702083, 6240971, 18722913]

約数ペア:

[(1, 18722913), (3, 6240971), (11, 1702083), (33, 567361), (61, 306933), (71, 263703), (131, 142923), (183, 102311), (213, 87901), (393, 47641), (671, 27903), (781, 23973), (1441, 12993), (2013, 9301), (2343, 7991), (4323, 4331)]