21557943

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3067}}^1$

素因数の和:3155

約数の個数: 24

約数和(自身を含む): 34459776

約数和(自身を除く): 12901833

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 3067, 7029, 9201, 27603, 33737, 101211, 217757, 303633, 653271, 1959813, 2395327, 7185981, 21557943]

約数ペア:

[(1, 21557943), (3, 7185981), (9, 2395327), (11, 1959813), (33, 653271), (71, 303633), (99, 217757), (213, 101211), (639, 33737), (781, 27603), (2343, 9201), (3067, 7029)]