20155551

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10326369

約数列:

[1, 3, 13, 29, 39, 71, 87, 213, 251, 377, 753, 923, 1131, 2059, 2769, 3263, 6177, 7279, 9789, 17821, 21837, 26767, 53463, 80301, 94627, 231673, 283881, 516809, 695019, 1550427, 6718517, 20155551]

約数ペア:

[(1, 20155551), (3, 6718517), (13, 1550427), (29, 695019), (39, 516809), (71, 283881), (87, 231673), (213, 94627), (251, 80301), (377, 53463), (753, 26767), (923, 21837), (1131, 17821), (2059, 9789), (2769, 7279), (3263, 6177)]