1991007

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2039

約数の個数: 16

約数和(自身を含む): 3030880

約数和(自身を除く): 1039873

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 1993, 5979, 17937, 53811, 73741, 221223, 663669, 1991007]

約数ペア:

[(1, 1991007), (3, 663669), (9, 221223), (27, 73741), (37, 53811), (111, 17937), (333, 5979), (999, 1993)]