209218527

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{15739}}^1$

素因数の和:15963

約数の個数: 24

約数和(自身を含む): 347035520

約数和(自身を除く): 137816993

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1477, 1899, 4431, 13293, 15739, 47217, 110173, 141651, 330519, 991557, 3320929, 9962787, 23246503, 29888361, 69739509, 209218527]

約数ペア:

[(1, 209218527), (3, 69739509), (7, 29888361), (9, 23246503), (21, 9962787), (63, 3320929), (211, 991557), (633, 330519), (1477, 141651), (1899, 110173), (4431, 47217), (13293, 15739)]