389837080

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{10037}}^1$

素因数の和:11019

約数の個数: 32

約数和(自身を含む): 878124240

約数和(自身を除く): 488287160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 3884, 4855, 7768, 9710, 10037, 19420, 20074, 38840, 40148, 50185, 80296, 100370, 200740, 401480, 9745927, 19491854, 38983708, 48729635, 77967416, 97459270, 194918540, 389837080]

約数ペア:

[(1, 389837080), (2, 194918540), (4, 97459270), (5, 77967416), (8, 48729635), (10, 38983708), (20, 19491854), (40, 9745927), (971, 401480), (1942, 200740), (3884, 100370), (4855, 80296), (7768, 50185), (9710, 40148), (10037, 38840), (19420, 20074)]