19929371

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4243}}^1$

素因数の和:4322

約数の個数: 16

約数和(自身を含む): 25260288

約数和(自身を除く): 5330917

約数列:

[1, 7, 11, 61, 77, 427, 671, 4243, 4697, 29701, 46673, 258823, 326711, 1811761, 2847053, 19929371]

約数ペア:

[(1, 19929371), (7, 2847053), (11, 1811761), (61, 326711), (77, 258823), (427, 46673), (671, 29701), (4243, 4697)]