156939827540

素因数分解:

$2^2\times 5^1\times {\mathrm{19717}}^1\times {\mathrm{397981}}^1$

素因数の和:417707

約数の個数: 24

約数和(自身を含む): 329591181192

約数和(自身を除く): 172651353652

約数列:

[1, 2, 4, 5, 10, 20, 19717, 39434, 78868, 98585, 197170, 394340, 397981, 795962, 1591924, 1989905, 3979810, 7959620, 7846991377, 15693982754, 31387965508, 39234956885, 78469913770, 156939827540]

約数ペア:

[(1, 156939827540), (2, 78469913770), (4, 39234956885), (5, 31387965508), (10, 15693982754), (20, 7846991377), (19717, 7959620), (39434, 3979810), (78868, 1989905), (98585, 1591924), (197170, 795962), (394340, 397981)]