18205400

素因数分解:

$2^3\times 5^2\times {\mathrm{227}}^1\times {\mathrm{401}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 42620040

約数和(自身を除く): 24414640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 227, 401, 454, 802, 908, 1135, 1604, 1816, 2005, 2270, 3208, 4010, 4540, 5675, 8020, 9080, 10025, 11350, 16040, 20050, 22700, 40100, 45400, 80200, 91027, 182054, 364108, 455135, 728216, 910270, 1820540, 2275675, 3641080, 4551350, 9102700, 18205400]

約数ペア:

[(1, 18205400), (2, 9102700), (4, 4551350), (5, 3641080), (8, 2275675), (10, 1820540), (20, 910270), (25, 728216), (40, 455135), (50, 364108), (100, 182054), (200, 91027), (227, 80200), (401, 45400), (454, 40100), (802, 22700), (908, 20050), (1135, 16040), (1604, 11350), (1816, 10025), (2005, 9080), (2270, 8020), (3208, 5675), (4010, 4540)]