20869455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{367}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 35610624

約数和(自身を除く): 14741169

約数列:

[1, 3, 5, 15, 17, 51, 85, 223, 255, 367, 669, 1101, 1115, 1835, 3345, 3791, 5505, 6239, 11373, 18717, 18955, 31195, 56865, 81841, 93585, 245523, 409205, 1227615, 1391297, 4173891, 6956485, 20869455]

約数ペア:

[(1, 20869455), (3, 6956485), (5, 4173891), (15, 1391297), (17, 1227615), (51, 409205), (85, 245523), (223, 93585), (255, 81841), (367, 56865), (669, 31195), (1101, 18955), (1115, 18717), (1835, 11373), (3345, 6239), (3791, 5505)]