21276619

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{1021}}^1$

素因数の和:1270

約数の個数: 16

約数和(自身を含む): 26326720

約数和(自身を除く): 5050101

約数列:

[1, 7, 13, 91, 229, 1021, 1603, 2977, 7147, 13273, 20839, 92911, 233809, 1636663, 3039517, 21276619]

約数ペア:

[(1, 21276619), (7, 3039517), (13, 1636663), (91, 233809), (229, 92911), (1021, 20839), (1603, 13273), (2977, 7147)]