21906759

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17681}}^1$

素因数の和:17750

約数の個数: 16

約数和(自身を含む): 33949440

約数和(自身を除く): 12042681

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17681, 53043, 123767, 371301, 1043179, 3129537, 7302253, 21906759]

約数ペア:

[(1, 21906759), (3, 7302253), (7, 3129537), (21, 1043179), (59, 371301), (177, 123767), (413, 53043), (1239, 17681)]