21359121

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17239}}^1$

素因数の和:17308

約数の個数: 16

約数和(自身を含む): 33100800

約数和(自身を除く): 11741679

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17239, 51717, 120673, 362019, 1017101, 3051303, 7119707, 21359121]

約数ペア:

[(1, 21359121), (3, 7119707), (7, 3051303), (21, 1017101), (59, 362019), (177, 120673), (413, 51717), (1239, 17239)]