20565404180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14482679}}^1$

素因数の和:14482759

約数の個数: 24

約数和(自身を含む): 43795624320

約数和(自身を除く): 23230220140

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14482679, 28965358, 57930716, 72413395, 144826790, 289653580, 1028270209, 2056540418, 4113080836, 5141351045, 10282702090, 20565404180]

約数ペア:

[(1, 20565404180), (2, 10282702090), (4, 5141351045), (5, 4113080836), (10, 2056540418), (20, 1028270209), (71, 289653580), (142, 144826790), (284, 72413395), (355, 57930716), (710, 28965358), (1420, 14482679)]