20866818

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{719}}^1$

素因数の和:1422

約数の個数: 32

約数和(自身を含む): 47831040

約数和(自身を除く): 26964222

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 691, 719, 1382, 1438, 2073, 2157, 4146, 4314, 4837, 5033, 9674, 10066, 14511, 15099, 29022, 30198, 496829, 993658, 1490487, 2980974, 3477803, 6955606, 10433409, 20866818]

約数ペア:

[(1, 20866818), (2, 10433409), (3, 6955606), (6, 3477803), (7, 2980974), (14, 1490487), (21, 993658), (42, 496829), (691, 30198), (719, 29022), (1382, 15099), (1438, 14511), (2073, 10066), (2157, 9674), (4146, 5033), (4314, 4837)]