20956960

素因数分解:

$2^5\times 5^1\times {\mathrm{130981}}^1$

素因数の和:130996

約数の個数: 24

約数和(自身を含む): 49511196

約数和(自身を除く): 28554236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130981, 261962, 523924, 654905, 1047848, 1309810, 2095696, 2619620, 4191392, 5239240, 10478480, 20956960]

約数ペア:

[(1, 20956960), (2, 10478480), (4, 5239240), (5, 4191392), (8, 2619620), (10, 2095696), (16, 1309810), (20, 1047848), (32, 654905), (40, 523924), (80, 261962), (160, 130981)]