21427504

素因数分解:

$2^4\times 7^2\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:354

約数の個数: 60

約数和(自身を含む): 48882288

約数和(自身を除く): 27454784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 151, 181, 196, 302, 362, 392, 604, 724, 784, 1057, 1208, 1267, 1448, 2114, 2416, 2534, 2896, 4228, 5068, 7399, 8456, 8869, 10136, 14798, 16912, 17738, 20272, 27331, 29596, 35476, 54662, 59192, 70952, 109324, 118384, 141904, 191317, 218648, 382634, 437296, 765268, 1339219, 1530536, 2678438, 3061072, 5356876, 10713752, 21427504]

約数ペア:

[(1, 21427504), (2, 10713752), (4, 5356876), (7, 3061072), (8, 2678438), (14, 1530536), (16, 1339219), (28, 765268), (49, 437296), (56, 382634), (98, 218648), (112, 191317), (151, 141904), (181, 118384), (196, 109324), (302, 70952), (362, 59192), (392, 54662), (604, 35476), (724, 29596), (784, 27331), (1057, 20272), (1208, 17738), (1267, 16912), (1448, 14798), (2114, 10136), (2416, 8869), (2534, 8456), (2896, 7399), (4228, 5068)]