19895975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1019}}^1$

素因数の和:1111

約数の個数: 24

約数和(自身を含む): 27319680

約数和(自身を除く): 7423705

約数列:

[1, 5, 11, 25, 55, 71, 275, 355, 781, 1019, 1775, 3905, 5095, 11209, 19525, 25475, 56045, 72349, 280225, 361745, 795839, 1808725, 3979195, 19895975]

約数ペア:

[(1, 19895975), (5, 3979195), (11, 1808725), (25, 795839), (55, 361745), (71, 280225), (275, 72349), (355, 56045), (781, 25475), (1019, 19525), (1775, 11209), (3905, 5095)]