20854971

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4397}}^1$

素因数の和:4451

約数の個数: 24

約数和(自身を含む): 32932224

約数和(自身を除く): 12077253

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 4397, 4743, 13191, 39573, 74749, 136307, 224247, 408921, 672741, 1226763, 2317219, 6951657, 20854971]

約数ペア:

[(1, 20854971), (3, 6951657), (9, 2317219), (17, 1226763), (31, 672741), (51, 408921), (93, 224247), (153, 136307), (279, 74749), (527, 39573), (1581, 13191), (4397, 4743)]