21263664

素因数分解:

$2^4\times 3^1\times {\mathrm{139}}^1\times {\mathrm{3187}}^1$

素因数の和:3337

約数の個数: 40

約数和(自身を含む): 55343680

約数和(自身を除く): 34080016

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 139, 278, 417, 556, 834, 1112, 1668, 2224, 3187, 3336, 6374, 6672, 9561, 12748, 19122, 25496, 38244, 50992, 76488, 152976, 442993, 885986, 1328979, 1771972, 2657958, 3543944, 5315916, 7087888, 10631832, 21263664]

約数ペア:

[(1, 21263664), (2, 10631832), (3, 7087888), (4, 5315916), (6, 3543944), (8, 2657958), (12, 1771972), (16, 1328979), (24, 885986), (48, 442993), (139, 152976), (278, 76488), (417, 50992), (556, 38244), (834, 25496), (1112, 19122), (1668, 12748), (2224, 9561), (3187, 6672), (3336, 6374)]