21730009

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{971}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 4397351

約数列:

[1, 7, 23, 139, 161, 971, 973, 3197, 6797, 22333, 22379, 134969, 156331, 944783, 3104287, 21730009]

約数ペア:

[(1, 21730009), (7, 3104287), (23, 944783), (139, 156331), (161, 134969), (971, 22379), (973, 22333), (3197, 6797)]