21854367

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:357

約数の個数: 40

約数和(自身を含む): 35283600

約数和(自身を除く): 13429233

約数列:

[1, 3, 9, 17, 27, 51, 59, 81, 153, 177, 269, 459, 531, 807, 1003, 1377, 1593, 2421, 3009, 4573, 4779, 7263, 9027, 13719, 15871, 21789, 27081, 41157, 47613, 81243, 123471, 142839, 269807, 370413, 428517, 809421, 1285551, 2428263, 7284789, 21854367]

約数ペア:

[(1, 21854367), (3, 7284789), (9, 2428263), (17, 1285551), (27, 809421), (51, 428517), (59, 370413), (81, 269807), (153, 142839), (177, 123471), (269, 81243), (459, 47613), (531, 41157), (807, 27081), (1003, 21789), (1377, 15871), (1593, 13719), (2421, 9027), (3009, 7263), (4573, 4779)]