21951328

素因数分解:

$2^5\times 7^1\times {\mathrm{43}}^2\times {\mathrm{53}}^1$

素因数の和:156

約数の個数: 72

約数和(自身を含む): 51519888

約数和(自身を除く): 29568560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 53, 56, 86, 106, 112, 172, 212, 224, 301, 344, 371, 424, 602, 688, 742, 848, 1204, 1376, 1484, 1696, 1849, 2279, 2408, 2968, 3698, 4558, 4816, 5936, 7396, 9116, 9632, 11872, 12943, 14792, 15953, 18232, 25886, 29584, 31906, 36464, 51772, 59168, 63812, 72928, 97997, 103544, 127624, 195994, 207088, 255248, 391988, 414176, 510496, 685979, 783976, 1371958, 1567952, 2743916, 3135904, 5487832, 10975664, 21951328]

約数ペア:

[(1, 21951328), (2, 10975664), (4, 5487832), (7, 3135904), (8, 2743916), (14, 1567952), (16, 1371958), (28, 783976), (32, 685979), (43, 510496), (53, 414176), (56, 391988), (86, 255248), (106, 207088), (112, 195994), (172, 127624), (212, 103544), (224, 97997), (301, 72928), (344, 63812), (371, 59168), (424, 51772), (602, 36464), (688, 31906), (742, 29584), (848, 25886), (1204, 18232), (1376, 15953), (1484, 14792), (1696, 12943), (1849, 11872), (2279, 9632), (2408, 9116), (2968, 7396), (3698, 5936), (4558, 4816)]