21828051

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 38750400

約数和(自身を除く): 16922349

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 89, 119, 153, 229, 267, 357, 623, 687, 801, 1071, 1513, 1603, 1869, 2061, 3893, 4539, 4809, 5607, 10591, 11679, 13617, 14427, 20381, 27251, 31773, 35037, 61143, 81753, 95319, 142667, 183429, 245259, 346477, 428001, 1039431, 1284003, 2425339, 3118293, 7276017, 21828051]

約数ペア:

[(1, 21828051), (3, 7276017), (7, 3118293), (9, 2425339), (17, 1284003), (21, 1039431), (51, 428001), (63, 346477), (89, 245259), (119, 183429), (153, 142667), (229, 95319), (267, 81753), (357, 61143), (623, 35037), (687, 31773), (801, 27251), (1071, 20381), (1513, 14427), (1603, 13617), (1869, 11679), (2061, 10591), (3893, 5607), (4539, 4809)]