21277209

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{523}}^1$

素因数の和:788

約数の個数: 16

約数和(自身を含む): 28975104

約数和(自身を除く): 7697895

約数列:

[1, 3, 71, 191, 213, 523, 573, 1569, 13561, 37133, 40683, 99893, 111399, 299679, 7092403, 21277209]

約数ペア:

[(1, 21277209), (3, 7092403), (71, 299679), (191, 111399), (213, 99893), (523, 40683), (573, 37133), (1569, 13561)]