19870900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{28387}}^1$

素因数の和:28408

約数の個数: 36

約数和(自身を含む): 49281568

約数和(自身を除く): 29410668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 28387, 56774, 113548, 141935, 198709, 283870, 397418, 567740, 709675, 794836, 993545, 1419350, 1987090, 2838700, 3974180, 4967725, 9935450, 19870900]

約数ペア:

[(1, 19870900), (2, 9935450), (4, 4967725), (5, 3974180), (7, 2838700), (10, 1987090), (14, 1419350), (20, 993545), (25, 794836), (28, 709675), (35, 567740), (50, 397418), (70, 283870), (100, 198709), (140, 141935), (175, 113548), (350, 56774), (700, 28387)]