19854304

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 40981248

約数和(自身を除く): 21126944

約数列:

[1, 2, 4, 8, 16, 32, 43, 47, 86, 94, 172, 188, 307, 344, 376, 614, 688, 752, 1228, 1376, 1504, 2021, 2456, 4042, 4912, 8084, 9824, 13201, 14429, 16168, 26402, 28858, 32336, 52804, 57716, 64672, 105608, 115432, 211216, 230864, 422432, 461728, 620447, 1240894, 2481788, 4963576, 9927152, 19854304]

約数ペア:

[(1, 19854304), (2, 9927152), (4, 4963576), (8, 2481788), (16, 1240894), (32, 620447), (43, 461728), (47, 422432), (86, 230864), (94, 211216), (172, 115432), (188, 105608), (307, 64672), (344, 57716), (376, 52804), (614, 32336), (688, 28858), (752, 26402), (1228, 16168), (1376, 14429), (1504, 13201), (2021, 9824), (2456, 8084), (4042, 4912)]