21344841

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1669}}^1$

素因数の和:1718

約数の個数: 36

約数和(自身を含む): 37124100

約数和(自身を除く): 15779259

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1669, 1827, 4263, 5007, 11683, 12789, 15021, 35049, 48401, 81781, 105147, 145203, 245343, 338807, 435609, 736029, 1016421, 2371649, 3049263, 7114947, 21344841]

約数ペア:

[(1, 21344841), (3, 7114947), (7, 3049263), (9, 2371649), (21, 1016421), (29, 736029), (49, 435609), (63, 338807), (87, 245343), (147, 145203), (203, 105147), (261, 81781), (441, 48401), (609, 35049), (1421, 15021), (1669, 12789), (1827, 11683), (4263, 5007)]