19381900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{101}}^2$

素因数の和:235

約数の個数: 54

約数和(自身を含む): 44715020

約数和(自身を除く): 25333120

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 101, 190, 202, 380, 404, 475, 505, 950, 1010, 1900, 1919, 2020, 2525, 3838, 5050, 7676, 9595, 10100, 10201, 19190, 20402, 38380, 40804, 47975, 51005, 95950, 102010, 191900, 193819, 204020, 255025, 387638, 510050, 775276, 969095, 1020100, 1938190, 3876380, 4845475, 9690950, 19381900]

約数ペア:

[(1, 19381900), (2, 9690950), (4, 4845475), (5, 3876380), (10, 1938190), (19, 1020100), (20, 969095), (25, 775276), (38, 510050), (50, 387638), (76, 255025), (95, 204020), (100, 193819), (101, 191900), (190, 102010), (202, 95950), (380, 51005), (404, 47975), (475, 40804), (505, 38380), (950, 20402), (1010, 19190), (1900, 10201), (1919, 10100), (2020, 9595), (2525, 7676), (3838, 5050)]