21959289

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{691}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 35873280

約数和(自身を除く): 13913991

約数列:

[1, 3, 9, 11, 27, 33, 99, 107, 297, 321, 691, 963, 1177, 2073, 2889, 3531, 6219, 7601, 10593, 18657, 22803, 31779, 68409, 73937, 205227, 221811, 665433, 813307, 1996299, 2439921, 7319763, 21959289]

約数ペア:

[(1, 21959289), (3, 7319763), (9, 2439921), (11, 1996299), (27, 813307), (33, 665433), (99, 221811), (107, 205227), (297, 73937), (321, 68409), (691, 31779), (963, 22803), (1177, 18657), (2073, 10593), (2889, 7601), (3531, 6219)]