213225380

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^2\times {\mathrm{661}}^1$

素因数の和:924

約数の個数: 36

約数和(自身を含む): 452009628

約数和(自身を除く): 238784248

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 661, 1270, 1322, 2540, 2644, 3305, 6610, 13220, 16129, 32258, 64516, 80645, 83947, 161290, 167894, 322580, 335788, 419735, 839470, 1678940, 10661269, 21322538, 42645076, 53306345, 106612690, 213225380]

約数ペア:

[(1, 213225380), (2, 106612690), (4, 53306345), (5, 42645076), (10, 21322538), (20, 10661269), (127, 1678940), (254, 839470), (508, 419735), (635, 335788), (661, 322580), (1270, 167894), (1322, 161290), (2540, 83947), (2644, 80645), (3305, 64516), (6610, 32258), (13220, 16129)]