20201420

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6779}}^1$

素因数の和:6937

約数の個数: 24

約数和(自身を含む): 42714000

約数和(自身を除く): 22512580

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6779, 13558, 27116, 33895, 67790, 135580, 1010071, 2020142, 4040284, 5050355, 10100710, 20201420]

約数ペア:

[(1, 20201420), (2, 10100710), (4, 5050355), (5, 4040284), (10, 2020142), (20, 1010071), (149, 135580), (298, 67790), (596, 33895), (745, 27116), (1490, 13558), (2980, 6779)]