21309484

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 44568832

約数和(自身を除く): 23259348

約数列:

[1, 2, 4, 7, 14, 28, 37, 67, 74, 134, 148, 259, 268, 307, 469, 518, 614, 938, 1036, 1228, 1876, 2149, 2479, 4298, 4958, 8596, 9916, 11359, 17353, 20569, 22718, 34706, 41138, 45436, 69412, 79513, 82276, 143983, 159026, 287966, 318052, 575932, 761053, 1522106, 3044212, 5327371, 10654742, 21309484]

約数ペア:

[(1, 21309484), (2, 10654742), (4, 5327371), (7, 3044212), (14, 1522106), (28, 761053), (37, 575932), (67, 318052), (74, 287966), (134, 159026), (148, 143983), (259, 82276), (268, 79513), (307, 69412), (469, 45436), (518, 41138), (614, 34706), (938, 22718), (1036, 20569), (1228, 17353), (1876, 11359), (2149, 9916), (2479, 8596), (4298, 4958)]