20400813

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2251}}^1$

素因数の和:2329

約数の個数: 24

約数和(自身を含む): 31618080

約数和(自身を除く): 11217267

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2251, 3021, 6753, 9063, 20259, 42769, 119303, 128307, 357909, 384921, 1073727, 2266757, 6800271, 20400813]

約数ペア:

[(1, 20400813), (3, 6800271), (9, 2266757), (19, 1073727), (53, 384921), (57, 357909), (159, 128307), (171, 119303), (477, 42769), (1007, 20259), (2251, 9063), (3021, 6753)]