20690495

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1069}}^1$

素因数の和:1167

約数の個数: 24

約数和(自身を含む): 29275200

約数和(自身を除く): 8584705

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 1069, 2765, 3871, 5345, 7483, 19355, 37415, 52381, 84451, 261905, 422255, 591157, 2955785, 4138099, 20690495]

約数ペア:

[(1, 20690495), (5, 4138099), (7, 2955785), (35, 591157), (49, 422255), (79, 261905), (245, 84451), (395, 52381), (553, 37415), (1069, 19355), (2765, 7483), (3871, 5345)]