217086280

素因数分解:

$2^3\times 5^1\times {\mathrm{1609}}^1\times {\mathrm{3373}}^1$

素因数の和:4993

約数の個数: 32

約数和(自身を含む): 488892600

約数和(自身を除く): 271806320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1609, 3218, 3373, 6436, 6746, 8045, 12872, 13492, 16090, 16865, 26984, 32180, 33730, 64360, 67460, 134920, 5427157, 10854314, 21708628, 27135785, 43417256, 54271570, 108543140, 217086280]

約数ペア:

[(1, 217086280), (2, 108543140), (4, 54271570), (5, 43417256), (8, 27135785), (10, 21708628), (20, 10854314), (40, 5427157), (1609, 134920), (3218, 67460), (3373, 64360), (6436, 33730), (6746, 32180), (8045, 26984), (12872, 16865), (13492, 16090)]