21311576

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1433}}^1$

素因数の和:1476

約数の個数: 48

約数和(自身を含む): 47235960

約数和(自身を除く): 25924384

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1352, 1433, 1859, 2866, 3718, 5732, 7436, 11464, 14872, 15763, 18629, 31526, 37258, 63052, 74516, 126104, 149032, 204919, 242177, 409838, 484354, 819676, 968708, 1639352, 1937416, 2663947, 5327894, 10655788, 21311576]

約数ペア:

[(1, 21311576), (2, 10655788), (4, 5327894), (8, 2663947), (11, 1937416), (13, 1639352), (22, 968708), (26, 819676), (44, 484354), (52, 409838), (88, 242177), (104, 204919), (143, 149032), (169, 126104), (286, 74516), (338, 63052), (572, 37258), (676, 31526), (1144, 18629), (1352, 15763), (1433, 14872), (1859, 11464), (2866, 7436), (3718, 5732)]