21729939

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4951}}^1$

素因数の和:4991

約数の個数: 32

約数和(自身を含む): 38031360

約数和(自身を除く): 16301421

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4951, 14853, 34657, 54461, 94069, 103971, 163383, 282207, 381227, 658483, 1034759, 1143681, 1975449, 3104277, 7243313, 21729939]

約数ペア:

[(1, 21729939), (3, 7243313), (7, 3104277), (11, 1975449), (19, 1143681), (21, 1034759), (33, 658483), (57, 381227), (77, 282207), (133, 163383), (209, 103971), (231, 94069), (399, 54461), (627, 34657), (1463, 14853), (4389, 4951)]