21217339

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6451}}^1$

素因数の和:6498

約数の個数: 16

約数和(自身を含む): 26014464

約数和(自身を除く): 4797125

約数列:

[1, 11, 13, 23, 143, 253, 299, 3289, 6451, 70961, 83863, 148373, 922493, 1632103, 1928849, 21217339]

約数ペア:

[(1, 21217339), (11, 1928849), (13, 1632103), (23, 922493), (143, 148373), (253, 83863), (299, 70961), (3289, 6451)]