19780533

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{311}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 29592576

約数和(自身を除く): 9812043

約数列:

[1, 3, 9, 37, 111, 191, 311, 333, 573, 933, 1719, 2799, 7067, 11507, 21201, 34521, 59401, 63603, 103563, 178203, 534609, 2197837, 6593511, 19780533]

約数ペア:

[(1, 19780533), (3, 6593511), (9, 2197837), (37, 534609), (111, 178203), (191, 103563), (311, 63603), (333, 59401), (573, 34521), (933, 21201), (1719, 11507), (2799, 7067)]