81641308

素因数分解:

$2^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{7129}}^1$

素因数の和:7549

約数の個数: 24

約数和(自身を含む): 163704800

約数和(自身を除く): 82063492

約数列:

[1, 2, 4, 7, 14, 28, 409, 818, 1636, 2863, 5726, 7129, 11452, 14258, 28516, 49903, 99806, 199612, 2915761, 5831522, 11663044, 20410327, 40820654, 81641308]

約数ペア:

[(1, 81641308), (2, 40820654), (4, 20410327), (7, 11663044), (14, 5831522), (28, 2915761), (409, 199612), (818, 99806), (1636, 49903), (2863, 28516), (5726, 14258), (7129, 11452)]