19139825

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 24748416

約数和(自身を除く): 5608591

約数列:

[1, 5, 25, 41, 71, 205, 263, 355, 1025, 1315, 1775, 2911, 6575, 10783, 14555, 18673, 53915, 72775, 93365, 269575, 466825, 765593, 3827965, 19139825]

約数ペア:

[(1, 19139825), (5, 3827965), (25, 765593), (41, 466825), (71, 269575), (205, 93365), (263, 72775), (355, 53915), (1025, 18673), (1315, 14555), (1775, 10783), (2911, 6575)]