1821331029

素因数分解:

$3^1\times 7^3\times {\mathrm{1770001}}^1$

素因数の和:1770025

約数の個数: 16

約数和(自身を含む): 2832003200

約数和(自身を除く): 1010672171

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 1770001, 5310003, 12390007, 37170021, 86730049, 260190147, 607110343, 1821331029]

約数ペア:

[(1, 1821331029), (3, 607110343), (7, 260190147), (21, 86730049), (49, 37170021), (147, 12390007), (343, 5310003), (1029, 1770001)]