21021616

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 51568128

約数和(自身を除く): 30546512

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 113, 151, 154, 176, 226, 302, 308, 452, 604, 616, 791, 904, 1057, 1208, 1232, 1243, 1582, 1661, 1808, 2114, 2416, 2486, 3164, 3322, 4228, 4972, 6328, 6644, 8456, 8701, 9944, 11627, 12656, 13288, 16912, 17063, 17402, 19888, 23254, 26576, 34126, 34804, 46508, 68252, 69608, 93016, 119441, 136504, 139216, 186032, 187693, 238882, 273008, 375386, 477764, 750772, 955528, 1313851, 1501544, 1911056, 2627702, 3003088, 5255404, 10510808, 21021616]

約数ペア:

[(1, 21021616), (2, 10510808), (4, 5255404), (7, 3003088), (8, 2627702), (11, 1911056), (14, 1501544), (16, 1313851), (22, 955528), (28, 750772), (44, 477764), (56, 375386), (77, 273008), (88, 238882), (112, 187693), (113, 186032), (151, 139216), (154, 136504), (176, 119441), (226, 93016), (302, 69608), (308, 68252), (452, 46508), (604, 34804), (616, 34126), (791, 26576), (904, 23254), (1057, 19888), (1208, 17402), (1232, 17063), (1243, 16912), (1582, 13288), (1661, 12656), (1808, 11627), (2114, 9944), (2416, 8701), (2486, 8456), (3164, 6644), (3322, 6328), (4228, 4972)]