28217920

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{809}}^1$

素因数の和:935

約数の個数: 56

約数和(自身を含む): 67894200

約数和(自身を除く): 39676280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 809, 872, 1090, 1618, 1744, 2180, 3236, 3488, 4045, 4360, 6472, 6976, 8090, 8720, 12944, 16180, 17440, 25888, 32360, 34880, 51776, 64720, 88181, 129440, 176362, 258880, 352724, 440905, 705448, 881810, 1410896, 1763620, 2821792, 3527240, 5643584, 7054480, 14108960, 28217920]

約数ペア:

[(1, 28217920), (2, 14108960), (4, 7054480), (5, 5643584), (8, 3527240), (10, 2821792), (16, 1763620), (20, 1410896), (32, 881810), (40, 705448), (64, 440905), (80, 352724), (109, 258880), (160, 176362), (218, 129440), (320, 88181), (436, 64720), (545, 51776), (809, 34880), (872, 32360), (1090, 25888), (1618, 17440), (1744, 16180), (2180, 12944), (3236, 8720), (3488, 8090), (4045, 6976), (4360, 6472)]