21165886

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1693}}^1$

素因数の和:1768

約数の個数: 32

約数和(自身を含む): 39029760

約数和(自身を除く): 17863874

約数列:

[1, 2, 7, 14, 19, 38, 47, 94, 133, 266, 329, 658, 893, 1693, 1786, 3386, 6251, 11851, 12502, 23702, 32167, 64334, 79571, 159142, 225169, 450338, 556997, 1113994, 1511849, 3023698, 10582943, 21165886]

約数ペア:

[(1, 21165886), (2, 10582943), (7, 3023698), (14, 1511849), (19, 1113994), (38, 556997), (47, 450338), (94, 225169), (133, 159142), (266, 79571), (329, 64334), (658, 32167), (893, 23702), (1693, 12502), (1786, 11851), (3386, 6251)]