21278824

素因数分解:

$2^3\times 7^1\times {\mathrm{379979}}^1$

素因数の和:379992

約数の個数: 16

約数和(自身を含む): 45597600

約数和(自身を除く): 24318776

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 379979, 759958, 1519916, 2659853, 3039832, 5319706, 10639412, 21278824]

約数ペア:

[(1, 21278824), (2, 10639412), (4, 5319706), (7, 3039832), (8, 2659853), (14, 1519916), (28, 759958), (56, 379979)]