21470659

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:514

約数の個数: 16

約数和(自身を含む): 25113088

約数和(自身を除く): 3642429

約数列:

[1, 7, 97, 103, 307, 679, 721, 2149, 9991, 29779, 31621, 69937, 208453, 221347, 3067237, 21470659]

約数ペア:

[(1, 21470659), (7, 3067237), (97, 221347), (103, 208453), (307, 69937), (679, 31621), (721, 29779), (2149, 9991)]