18491978

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{11317}}^1$

素因数の和:11381

約数の個数: 16

約数和(自身を含む): 29879520

約数和(自身を除く): 11387542

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 11317, 22634, 215023, 430046, 486631, 973262, 9245989, 18491978]

約数ペア:

[(1, 18491978), (2, 9245989), (19, 973262), (38, 486631), (43, 430046), (86, 215023), (817, 22634), (1634, 11317)]