21113920

素因数分解:

$2^6\times 5^1\times {\mathrm{65981}}^1$

素因数の和:65998

約数の個数: 28

約数和(自身を含む): 50278284

約数和(自身を除く): 29164364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65981, 131962, 263924, 329905, 527848, 659810, 1055696, 1319620, 2111392, 2639240, 4222784, 5278480, 10556960, 21113920]

約数ペア:

[(1, 21113920), (2, 10556960), (4, 5278480), (5, 4222784), (8, 2639240), (10, 2111392), (16, 1319620), (20, 1055696), (32, 659810), (40, 527848), (64, 329905), (80, 263924), (160, 131962), (320, 65981)]