20028897

素因数分解:

$3^3\times 7^2\times {\mathrm{15139}}^1$

素因数の和:15162

約数の個数: 24

約数和(自身を含む): 34519200

約数和(自身を除く): 14490303

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15139, 45417, 105973, 136251, 317919, 408753, 741811, 953757, 2225433, 2861271, 6676299, 20028897]

約数ペア:

[(1, 20028897), (3, 6676299), (7, 2861271), (9, 2225433), (21, 953757), (27, 741811), (49, 408753), (63, 317919), (147, 136251), (189, 105973), (441, 45417), (1323, 15139)]