12408940

素因数分解:

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

素因数の和:406

約数の個数: 48

約数和(自身を含む): 27320832

約数和(自身を除く): 14911892

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 307, 430, 470, 614, 860, 940, 1228, 1535, 2021, 3070, 4042, 6140, 8084, 10105, 13201, 14429, 20210, 26402, 28858, 40420, 52804, 57716, 66005, 72145, 132010, 144290, 264020, 288580, 620447, 1240894, 2481788, 3102235, 6204470, 12408940]

約数ペア:

[(1, 12408940), (2, 6204470), (4, 3102235), (5, 2481788), (10, 1240894), (20, 620447), (43, 288580), (47, 264020), (86, 144290), (94, 132010), (172, 72145), (188, 66005), (215, 57716), (235, 52804), (307, 40420), (430, 28858), (470, 26402), (614, 20210), (860, 14429), (940, 13201), (1228, 10105), (1535, 8084), (2021, 6140), (3070, 4042)]