21026247

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 32071680

約数和(自身を除く): 11045433

約数列:

[1, 3, 11, 29, 33, 87, 127, 173, 319, 381, 519, 957, 1397, 1903, 3683, 4191, 5017, 5709, 11049, 15051, 21971, 40513, 55187, 65913, 121539, 165561, 241681, 637159, 725043, 1911477, 7008749, 21026247]

約数ペア:

[(1, 21026247), (3, 7008749), (11, 1911477), (29, 725043), (33, 637159), (87, 241681), (127, 165561), (173, 121539), (319, 65913), (381, 55187), (519, 40513), (957, 21971), (1397, 15051), (1903, 11049), (3683, 5709), (4191, 5017)]