81811040

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4691}}^1$

素因数の和:4815

約数の個数: 48

約数和(自身を含む): 195093360

約数和(自身を除く): 113282320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1090, 1744, 2180, 3488, 4360, 4691, 8720, 9382, 17440, 18764, 23455, 37528, 46910, 75056, 93820, 150112, 187640, 375280, 511319, 750560, 1022638, 2045276, 2556595, 4090552, 5113190, 8181104, 10226380, 16362208, 20452760, 40905520, 81811040]

約数ペア:

[(1, 81811040), (2, 40905520), (4, 20452760), (5, 16362208), (8, 10226380), (10, 8181104), (16, 5113190), (20, 4090552), (32, 2556595), (40, 2045276), (80, 1022638), (109, 750560), (160, 511319), (218, 375280), (436, 187640), (545, 150112), (872, 93820), (1090, 75056), (1744, 46910), (2180, 37528), (3488, 23455), (4360, 18764), (4691, 17440), (8720, 9382)]