20452760

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4691}}^1$

素因数の和:4811

約数の個数: 32

約数和(自身を含む): 46450800

約数和(自身を除く): 25998040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4691, 9382, 18764, 23455, 37528, 46910, 93820, 187640, 511319, 1022638, 2045276, 2556595, 4090552, 5113190, 10226380, 20452760]

約数ペア:

[(1, 20452760), (2, 10226380), (4, 5113190), (5, 4090552), (8, 2556595), (10, 2045276), (20, 1022638), (40, 511319), (109, 187640), (218, 93820), (436, 46910), (545, 37528), (872, 23455), (1090, 18764), (2180, 9382), (4360, 4691)]