28428561

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{9601}}^1$

素因数の和:9661

約数の個数: 24

約数和(自身を含む): 47933184

約数和(自身を除く): 19504623

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 9601, 28803, 67207, 86409, 201621, 451247, 604863, 1353741, 3158729, 4061223, 9476187, 28428561]

約数ペア:

[(1, 28428561), (3, 9476187), (7, 4061223), (9, 3158729), (21, 1353741), (47, 604863), (63, 451247), (141, 201621), (329, 86409), (423, 67207), (987, 28803), (2961, 9601)]