21040558

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{431}}^1$

素因数の和:768

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 18523730

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 317, 431, 634, 862, 2219, 3017, 3487, 4438, 4741, 6034, 6974, 9482, 24409, 33187, 48818, 66374, 136627, 273254, 956389, 1502897, 1912778, 3005794, 10520279, 21040558]

約数ペア:

[(1, 21040558), (2, 10520279), (7, 3005794), (11, 1912778), (14, 1502897), (22, 956389), (77, 273254), (154, 136627), (317, 66374), (431, 48818), (634, 33187), (862, 24409), (2219, 9482), (3017, 6974), (3487, 6034), (4438, 4741)]