21280974

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1459}}^1$

素因数の和:1505

約数の個数: 64

約数和(自身を含む): 52980480

約数和(自身を除く): 31699506

約数列:

[1, 2, 3, 6, 11, 13, 17, 22, 26, 33, 34, 39, 51, 66, 78, 102, 143, 187, 221, 286, 374, 429, 442, 561, 663, 858, 1122, 1326, 1459, 2431, 2918, 4377, 4862, 7293, 8754, 14586, 16049, 18967, 24803, 32098, 37934, 48147, 49606, 56901, 74409, 96294, 113802, 148818, 208637, 272833, 322439, 417274, 545666, 625911, 644878, 818499, 967317, 1251822, 1636998, 1934634, 3546829, 7093658, 10640487, 21280974]

約数ペア:

[(1, 21280974), (2, 10640487), (3, 7093658), (6, 3546829), (11, 1934634), (13, 1636998), (17, 1251822), (22, 967317), (26, 818499), (33, 644878), (34, 625911), (39, 545666), (51, 417274), (66, 322439), (78, 272833), (102, 208637), (143, 148818), (187, 113802), (221, 96294), (286, 74409), (374, 56901), (429, 49606), (442, 48147), (561, 37934), (663, 32098), (858, 24803), (1122, 18967), (1326, 16049), (1459, 14586), (2431, 8754), (2918, 7293), (4377, 4862)]