21079545

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19793}}^1$

素因数の和:19872

約数の個数: 16

約数和(自身を含む): 34204032

約数和(自身を除く): 13124487

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19793, 59379, 98965, 296895, 1405303, 4215909, 7026515, 21079545]

約数ペア:

[(1, 21079545), (3, 7026515), (5, 4215909), (15, 1405303), (71, 296895), (213, 98965), (355, 59379), (1065, 19793)]