19945540

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{16903}}^1$

素因数の和:16971

約数の個数: 24

約数和(自身を含む): 42598080

約数和(自身を除く): 22652540

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 16903, 33806, 67612, 84515, 169030, 338060, 997277, 1994554, 3989108, 4986385, 9972770, 19945540]

約数ペア:

[(1, 19945540), (2, 9972770), (4, 4986385), (5, 3989108), (10, 1994554), (20, 997277), (59, 338060), (118, 169030), (236, 84515), (295, 67612), (590, 33806), (1180, 16903)]