20913144

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{443}}^1$

素因数の和:740

約数の個数: 64

約数和(自身を含む): 60099840

約数和(自身を除く): 39186696

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 281, 443, 562, 843, 886, 1124, 1329, 1686, 1772, 1967, 2248, 2658, 3101, 3372, 3544, 3934, 5316, 5901, 6202, 6744, 7868, 9303, 10632, 11802, 12404, 15736, 18606, 23604, 24808, 37212, 47208, 74424, 124483, 248966, 373449, 497932, 746898, 871381, 995864, 1493796, 1742762, 2614143, 2987592, 3485524, 5228286, 6971048, 10456572, 20913144]

約数ペア:

[(1, 20913144), (2, 10456572), (3, 6971048), (4, 5228286), (6, 3485524), (7, 2987592), (8, 2614143), (12, 1742762), (14, 1493796), (21, 995864), (24, 871381), (28, 746898), (42, 497932), (56, 373449), (84, 248966), (168, 124483), (281, 74424), (443, 47208), (562, 37212), (843, 24808), (886, 23604), (1124, 18606), (1329, 15736), (1686, 12404), (1772, 11802), (1967, 10632), (2248, 9303), (2658, 7868), (3101, 6744), (3372, 6202), (3544, 5901), (3934, 5316)]