13209903

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{683}}^1$

素因数の和:1003

約数の個数: 24

約数和(自身を含む): 21909888

約数和(自身を除く): 8699985

約数列:

[1, 3, 7, 9, 21, 63, 307, 683, 921, 2049, 2149, 2763, 4781, 6147, 6447, 14343, 19341, 43029, 209681, 629043, 1467767, 1887129, 4403301, 13209903]

約数ペア:

[(1, 13209903), (3, 4403301), (7, 1887129), (9, 1467767), (21, 629043), (63, 209681), (307, 43029), (683, 19341), (921, 14343), (2049, 6447), (2149, 6147), (2763, 4781)]