21940497

素因数分解:

$3^3\times {\mathrm{19}}^2\times {\mathrm{2251}}^1$

素因数の和:2298

約数の個数: 24

約数和(自身を含む): 34320480

約数和(自身を除く): 12379983

約数列:

[1, 3, 9, 19, 27, 57, 171, 361, 513, 1083, 2251, 3249, 6753, 9747, 20259, 42769, 60777, 128307, 384921, 812611, 1154763, 2437833, 7313499, 21940497]

約数ペア:

[(1, 21940497), (3, 7313499), (9, 2437833), (19, 1154763), (27, 812611), (57, 384921), (171, 128307), (361, 60777), (513, 42769), (1083, 20259), (2251, 9747), (3249, 6753)]