21728973

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{5981}}^1$

素因数の和:6164

約数の個数: 16

約数和(自身を含む): 33307776

約数和(自身を除く): 11578803

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 5981, 17943, 41867, 125601, 1034713, 3104139, 7242991, 21728973]

約数ペア:

[(1, 21728973), (3, 7242991), (7, 3104139), (21, 1034713), (173, 125601), (519, 41867), (1211, 17943), (3633, 5981)]