164020689

素因数分解:

$3^2\times 7^2\times {\mathrm{371929}}^1$

素因数の和:371949

約数の個数: 18

約数和(自身を含む): 275600130

約数和(自身を除く): 111579441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 371929, 1115787, 2603503, 3347361, 7810509, 18224521, 23431527, 54673563, 164020689]

約数ペア:

[(1, 164020689), (3, 54673563), (7, 23431527), (9, 18224521), (21, 7810509), (49, 3347361), (63, 2603503), (147, 1115787), (441, 371929)]