28811223

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{3491}}^1$

素因数の和:3635

約数の個数: 24

約数和(自身を含む): 47938176

約数和(自身を除く): 19126953

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2751, 3491, 8253, 10473, 24437, 31419, 73311, 219933, 457321, 1371963, 3201247, 4115889, 9603741, 28811223]

約数ペア:

[(1, 28811223), (3, 9603741), (7, 4115889), (9, 3201247), (21, 1371963), (63, 457321), (131, 219933), (393, 73311), (917, 31419), (1179, 24437), (2751, 10473), (3491, 8253)]