820121421

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1346669}}^1$

素因数の和:1346708

約数の個数: 16

約数和(自身を含む): 1292803200

約数和(自身を除く): 472681779

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 1346669, 4040007, 9426683, 28280049, 39053401, 117160203, 273373807, 820121421]

約数ペア:

[(1, 820121421), (3, 273373807), (7, 117160203), (21, 39053401), (29, 28280049), (87, 9426683), (203, 4040007), (609, 1346669)]