21786105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{157}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 39633984

約数和(自身を除く): 17847879

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 157, 165, 319, 435, 471, 785, 841, 957, 1595, 1727, 2355, 2523, 4205, 4553, 4785, 5181, 8635, 9251, 12615, 13659, 22765, 25905, 27753, 46255, 50083, 68295, 132037, 138765, 150249, 250415, 396111, 660185, 751245, 1452407, 1980555, 4357221, 7262035, 21786105]

約数ペア:

[(1, 21786105), (3, 7262035), (5, 4357221), (11, 1980555), (15, 1452407), (29, 751245), (33, 660185), (55, 396111), (87, 250415), (145, 150249), (157, 138765), (165, 132037), (319, 68295), (435, 50083), (471, 46255), (785, 27753), (841, 25905), (957, 22765), (1595, 13659), (1727, 12615), (2355, 9251), (2523, 8635), (4205, 5181), (4553, 4785)]