21351543

素因数分解:

$3^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1\times {\mathrm{307}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 28976640

約数和(自身を除く): 7625097

約数列:

[1, 3, 97, 239, 291, 307, 717, 921, 23183, 29779, 69549, 73373, 89337, 220119, 7117181, 21351543]

約数ペア:

[(1, 21351543), (3, 7117181), (97, 220119), (239, 89337), (291, 73373), (307, 69549), (717, 29779), (921, 23183)]