18943379

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 23892480

約数和(自身を除く): 4949101

約数列:

[1, 7, 13, 67, 91, 169, 239, 469, 871, 1183, 1673, 3107, 6097, 11323, 16013, 21749, 40391, 79261, 112091, 208169, 282737, 1457183, 2706197, 18943379]

約数ペア:

[(1, 18943379), (7, 2706197), (13, 1457183), (67, 282737), (91, 208169), (169, 112091), (239, 79261), (469, 40391), (871, 21749), (1183, 16013), (1673, 11323), (3107, 6097)]