21434413

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:87

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 10821587

約数列:

[1, 7, 11, 13, 19, 23, 49, 77, 91, 133, 143, 161, 209, 247, 253, 299, 343, 437, 539, 637, 931, 1001, 1127, 1463, 1729, 1771, 2093, 2717, 3059, 3289, 3773, 4459, 4807, 5681, 6517, 7007, 7889, 10241, 12103, 12397, 14651, 19019, 21413, 23023, 33649, 39767, 49049, 62491, 71687, 84721, 86779, 102557, 133133, 149891, 161161, 235543, 278369, 437437, 931931, 1128127, 1648801, 1948583, 3062059, 21434413]

約数ペア:

[(1, 21434413), (7, 3062059), (11, 1948583), (13, 1648801), (19, 1128127), (23, 931931), (49, 437437), (77, 278369), (91, 235543), (133, 161161), (143, 149891), (161, 133133), (209, 102557), (247, 86779), (253, 84721), (299, 71687), (343, 62491), (437, 49049), (539, 39767), (637, 33649), (931, 23023), (1001, 21413), (1127, 19019), (1463, 14651), (1729, 12397), (1771, 12103), (2093, 10241), (2717, 7889), (3059, 7007), (3289, 6517), (3773, 5681), (4459, 4807)]