20798811

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:368

約数の個数: 36

約数和(自身を含む): 33611760

約数和(自身を除く): 12812949

約数列:

[1, 3, 9, 11, 33, 71, 99, 121, 213, 269, 363, 639, 781, 807, 1089, 2343, 2421, 2959, 7029, 8591, 8877, 19099, 25773, 26631, 32549, 57297, 77319, 97647, 171891, 210089, 292941, 630267, 1890801, 2310979, 6932937, 20798811]

約数ペア:

[(1, 20798811), (3, 6932937), (9, 2310979), (11, 1890801), (33, 630267), (71, 292941), (99, 210089), (121, 171891), (213, 97647), (269, 77319), (363, 57297), (639, 32549), (781, 26631), (807, 25773), (1089, 19099), (2343, 8877), (2421, 8591), (2959, 7029)]