21228255

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10037}}^1$

素因数の和:10095

約数の個数: 24

約数和(自身を含む): 37582272

約数和(自身を除く): 16354017

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10037, 30111, 50185, 90333, 150555, 451665, 471739, 1415217, 2358695, 4245651, 7076085, 21228255]

約数ペア:

[(1, 21228255), (3, 7076085), (5, 4245651), (9, 2358695), (15, 1415217), (45, 471739), (47, 451665), (141, 150555), (235, 90333), (423, 50185), (705, 30111), (2115, 10037)]