21128030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1193}}^1$

素因数の和:1241

約数の個数: 64

約数和(自身を含む): 49517568

約数和(自身を除く): 28389538

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 23, 35, 46, 55, 70, 77, 110, 115, 154, 161, 230, 253, 322, 385, 506, 770, 805, 1193, 1265, 1610, 1771, 2386, 2530, 3542, 5965, 8351, 8855, 11930, 13123, 16702, 17710, 26246, 27439, 41755, 54878, 65615, 83510, 91861, 131230, 137195, 183722, 192073, 274390, 301829, 384146, 459305, 603658, 918610, 960365, 1509145, 1920730, 2112803, 3018290, 4225606, 10564015, 21128030]

約数ペア:

[(1, 21128030), (2, 10564015), (5, 4225606), (7, 3018290), (10, 2112803), (11, 1920730), (14, 1509145), (22, 960365), (23, 918610), (35, 603658), (46, 459305), (55, 384146), (70, 301829), (77, 274390), (110, 192073), (115, 183722), (154, 137195), (161, 131230), (230, 91861), (253, 83510), (322, 65615), (385, 54878), (506, 41755), (770, 27439), (805, 26246), (1193, 17710), (1265, 16702), (1610, 13123), (1771, 11930), (2386, 8855), (2530, 8351), (3542, 5965)]