19838600

素因数分解:

$2^3\times 5^2\times {\mathrm{281}}^1\times {\mathrm{353}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 46420020

約数和(自身を除く): 26581420

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 281, 353, 562, 706, 1124, 1405, 1412, 1765, 2248, 2810, 2824, 3530, 5620, 7025, 7060, 8825, 11240, 14050, 14120, 17650, 28100, 35300, 56200, 70600, 99193, 198386, 396772, 495965, 793544, 991930, 1983860, 2479825, 3967720, 4959650, 9919300, 19838600]

約数ペア:

[(1, 19838600), (2, 9919300), (4, 4959650), (5, 3967720), (8, 2479825), (10, 1983860), (20, 991930), (25, 793544), (40, 495965), (50, 396772), (100, 198386), (200, 99193), (281, 70600), (353, 56200), (562, 35300), (706, 28100), (1124, 17650), (1405, 14120), (1412, 14050), (1765, 11240), (2248, 8825), (2810, 7060), (2824, 7025), (3530, 5620)]