21027644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 41803776

約数和(自身を除く): 20776132

約数列:

[1, 2, 4, 11, 22, 44, 53, 71, 106, 127, 142, 212, 254, 284, 508, 583, 781, 1166, 1397, 1562, 2332, 2794, 3124, 3763, 5588, 6731, 7526, 9017, 13462, 15052, 18034, 26924, 36068, 41393, 74041, 82786, 99187, 148082, 165572, 198374, 296164, 396748, 477901, 955802, 1911604, 5256911, 10513822, 21027644]

約数ペア:

[(1, 21027644), (2, 10513822), (4, 5256911), (11, 1911604), (22, 955802), (44, 477901), (53, 396748), (71, 296164), (106, 198374), (127, 165572), (142, 148082), (212, 99187), (254, 82786), (284, 74041), (508, 41393), (583, 36068), (781, 26924), (1166, 18034), (1397, 15052), (1562, 13462), (2332, 9017), (2794, 7526), (3124, 6731), (3763, 5588)]