161218211

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{419}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 212889600

約数和(自身を除く): 51671389

約数列:

[1, 7, 11, 19, 77, 133, 209, 263, 419, 1463, 1841, 2893, 2933, 4609, 4997, 7961, 20251, 32263, 34979, 54967, 55727, 87571, 110197, 384769, 612997, 771379, 1212167, 2093743, 8485169, 14656201, 23031173, 161218211]

約数ペア:

[(1, 161218211), (7, 23031173), (11, 14656201), (19, 8485169), (77, 2093743), (133, 1212167), (209, 771379), (263, 612997), (419, 384769), (1463, 110197), (1841, 87571), (2893, 55727), (2933, 54967), (4609, 34979), (4997, 32263), (7961, 20251)]