19912900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{28447}}^1$

素因数の和:28468

約数の個数: 36

約数和(自身を含む): 49385728

約数和(自身を除く): 29472828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 28447, 56894, 113788, 142235, 199129, 284470, 398258, 568940, 711175, 796516, 995645, 1422350, 1991290, 2844700, 3982580, 4978225, 9956450, 19912900]

約数ペア:

[(1, 19912900), (2, 9956450), (4, 4978225), (5, 3982580), (7, 2844700), (10, 1991290), (14, 1422350), (20, 995645), (25, 796516), (28, 711175), (35, 568940), (50, 398258), (70, 284470), (100, 199129), (140, 142235), (175, 113788), (350, 56894), (700, 28447)]