21745581

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{293}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 34376832

約数和(自身を除く): 12631251

約数列:

[1, 3, 11, 13, 33, 39, 143, 173, 293, 429, 519, 879, 1903, 2249, 3223, 3809, 5709, 6747, 9669, 11427, 24739, 41899, 50689, 74217, 125697, 152067, 557579, 658957, 1672737, 1976871, 7248527, 21745581]

約数ペア:

[(1, 21745581), (3, 7248527), (11, 1976871), (13, 1672737), (33, 658957), (39, 557579), (143, 152067), (173, 125697), (293, 74217), (429, 50689), (519, 41899), (879, 24739), (1903, 11427), (2249, 9669), (3223, 6747), (3809, 5709)]