19123390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 41513472

約数和(自身を除く): 22390082

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 43, 55, 65, 86, 110, 130, 143, 215, 286, 311, 430, 473, 559, 622, 715, 946, 1118, 1430, 1555, 2365, 2795, 3110, 3421, 4043, 4730, 5590, 6149, 6842, 8086, 12298, 13373, 17105, 20215, 26746, 30745, 34210, 40430, 44473, 61490, 66865, 88946, 133730, 147103, 173849, 222365, 294206, 347698, 444730, 735515, 869245, 1471030, 1738490, 1912339, 3824678, 9561695, 19123390]

約数ペア:

[(1, 19123390), (2, 9561695), (5, 3824678), (10, 1912339), (11, 1738490), (13, 1471030), (22, 869245), (26, 735515), (43, 444730), (55, 347698), (65, 294206), (86, 222365), (110, 173849), (130, 147103), (143, 133730), (215, 88946), (286, 66865), (311, 61490), (430, 44473), (473, 40430), (559, 34210), (622, 30745), (715, 26746), (946, 20215), (1118, 17105), (1430, 13373), (1555, 12298), (2365, 8086), (2795, 6842), (3110, 6149), (3421, 5590), (4043, 4730)]