21485789

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2351}}^1$

素因数の和:2420

約数の個数: 16

約数和(自身を含む): 25025280

約数和(自身を除く): 3539491

約数列:

[1, 13, 19, 37, 247, 481, 703, 2351, 9139, 30563, 44669, 86987, 580697, 1130831, 1652753, 21485789]

約数ペア:

[(1, 21485789), (13, 1652753), (19, 1130831), (37, 580697), (247, 86987), (481, 44669), (703, 30563), (2351, 9139)]