18853681

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 25344000

約数和(自身を除く): 6490319

約数列:

[1, 7, 11, 19, 49, 77, 133, 209, 263, 343, 539, 931, 1463, 1841, 2893, 3773, 4997, 6517, 10241, 12887, 20251, 34979, 54967, 71687, 90209, 141757, 244853, 384769, 992299, 1713971, 2693383, 18853681]

約数ペア:

[(1, 18853681), (7, 2693383), (11, 1713971), (19, 992299), (49, 384769), (77, 244853), (133, 141757), (209, 90209), (263, 71687), (343, 54967), (539, 34979), (931, 20251), (1463, 12887), (1841, 10241), (2893, 6517), (3773, 4997)]