202080920

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{7643}}^1$

素因数の和:8315

約数の個数: 32

約数和(自身を含む): 455429520

約数和(自身を除く): 253348600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6610, 7643, 13220, 15286, 26440, 30572, 38215, 61144, 76430, 152860, 305720, 5052023, 10104046, 20208092, 25260115, 40416184, 50520230, 101040460, 202080920]

約数ペア:

[(1, 202080920), (2, 101040460), (4, 50520230), (5, 40416184), (8, 25260115), (10, 20208092), (20, 10104046), (40, 5052023), (661, 305720), (1322, 152860), (2644, 76430), (3305, 61144), (5288, 38215), (6610, 30572), (7643, 26440), (13220, 15286)]