21239968

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{16189}}^1$

素因数の和:16240

約数の個数: 24

約数和(自身を含む): 42838740

約数和(自身を除く): 21598772

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 328, 656, 1312, 16189, 32378, 64756, 129512, 259024, 518048, 663749, 1327498, 2654996, 5309992, 10619984, 21239968]

約数ペア:

[(1, 21239968), (2, 10619984), (4, 5309992), (8, 2654996), (16, 1327498), (32, 663749), (41, 518048), (82, 259024), (164, 129512), (328, 64756), (656, 32378), (1312, 16189)]