81204020

素因数分解:

$2^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{14347}}^1$

素因数の和:14639

約数の個数: 24

約数和(自身を含む): 171142944

約数和(自身を除く): 89938924

約数列:

[1, 2, 4, 5, 10, 20, 283, 566, 1132, 1415, 2830, 5660, 14347, 28694, 57388, 71735, 143470, 286940, 4060201, 8120402, 16240804, 20301005, 40602010, 81204020]

約数ペア:

[(1, 81204020), (2, 40602010), (4, 20301005), (5, 16240804), (10, 8120402), (20, 4060201), (283, 286940), (566, 143470), (1132, 71735), (1415, 57388), (2830, 28694), (5660, 14347)]