21092396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20820244

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 71, 116, 142, 197, 284, 377, 394, 754, 788, 923, 1508, 1846, 2059, 2561, 3692, 4118, 5122, 5713, 8236, 10244, 11426, 13987, 22852, 26767, 27974, 53534, 55948, 74269, 107068, 148538, 181831, 297076, 363662, 405623, 727324, 811246, 1622492, 5273099, 10546198, 21092396]

約数ペア:

[(1, 21092396), (2, 10546198), (4, 5273099), (13, 1622492), (26, 811246), (29, 727324), (52, 405623), (58, 363662), (71, 297076), (116, 181831), (142, 148538), (197, 107068), (284, 74269), (377, 55948), (394, 53534), (754, 27974), (788, 26767), (923, 22852), (1508, 13987), (1846, 11426), (2059, 10244), (2561, 8236), (3692, 5713), (4118, 5122)]