20210260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{599}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 48787200

約数和(自身を除く): 28576940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 241, 482, 599, 964, 1198, 1205, 1687, 2396, 2410, 2995, 3374, 4193, 4820, 5990, 6748, 8386, 8435, 11980, 16772, 16870, 20965, 33740, 41930, 83860, 144359, 288718, 577436, 721795, 1010513, 1443590, 2021026, 2887180, 4042052, 5052565, 10105130, 20210260]

約数ペア:

[(1, 20210260), (2, 10105130), (4, 5052565), (5, 4042052), (7, 2887180), (10, 2021026), (14, 1443590), (20, 1010513), (28, 721795), (35, 577436), (70, 288718), (140, 144359), (241, 83860), (482, 41930), (599, 33740), (964, 20965), (1198, 16870), (1205, 16772), (1687, 11980), (2396, 8435), (2410, 8386), (2995, 6748), (3374, 5990), (4193, 4820)]