18916960

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{863}}^1$

素因数の和:1015

約数の個数: 48

約数和(自身を含む): 45069696

約数和(自身を除く): 26152736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 863, 1096, 1370, 1726, 2192, 2740, 3452, 4315, 4384, 5480, 6904, 8630, 10960, 13808, 17260, 21920, 27616, 34520, 69040, 118231, 138080, 236462, 472924, 591155, 945848, 1182310, 1891696, 2364620, 3783392, 4729240, 9458480, 18916960]

約数ペア:

[(1, 18916960), (2, 9458480), (4, 4729240), (5, 3783392), (8, 2364620), (10, 1891696), (16, 1182310), (20, 945848), (32, 591155), (40, 472924), (80, 236462), (137, 138080), (160, 118231), (274, 69040), (548, 34520), (685, 27616), (863, 21920), (1096, 17260), (1370, 13808), (1726, 10960), (2192, 8630), (2740, 6904), (3452, 5480), (4315, 4384)]