21203259

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4831}}^1$

素因数の和:4871

約数の個数: 32

約数和(自身を含む): 37109760

約数和(自身を除く): 15906501

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4831, 14493, 33817, 53141, 91789, 101451, 159423, 275367, 371987, 642523, 1009679, 1115961, 1927569, 3029037, 7067753, 21203259]

約数ペア:

[(1, 21203259), (3, 7067753), (7, 3029037), (11, 1927569), (19, 1115961), (21, 1009679), (33, 642523), (57, 371987), (77, 275367), (133, 159423), (209, 101451), (231, 91789), (399, 53141), (627, 33817), (1463, 14493), (4389, 4831)]