388889221

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{1291}}^1\times {\mathrm{1871}}^1$

素因数の和:3192

約数の個数: 16

約数和(自身を含む): 464375808

約数和(自身を除く): 75486587

約数列:

[1, 7, 23, 161, 1291, 1871, 9037, 13097, 29693, 43033, 207851, 301231, 2415461, 16908227, 55555603, 388889221]

約数ペア:

[(1, 388889221), (7, 55555603), (23, 16908227), (161, 2415461), (1291, 301231), (1871, 207851), (9037, 43033), (13097, 29693)]