203772160

素因数分解:

$2^8\times 5^1\times {\mathrm{397}}^1\times {\mathrm{401}}^1$

素因数の和:819

約数の個数: 72

約数和(自身を含む): 490547736

約数和(自身を除く): 286775576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 397, 401, 640, 794, 802, 1280, 1588, 1604, 1985, 2005, 3176, 3208, 3970, 4010, 6352, 6416, 7940, 8020, 12704, 12832, 15880, 16040, 25408, 25664, 31760, 32080, 50816, 51328, 63520, 64160, 101632, 102656, 127040, 128320, 159197, 254080, 256640, 318394, 508160, 513280, 636788, 795985, 1273576, 1591970, 2547152, 3183940, 5094304, 6367880, 10188608, 12735760, 20377216, 25471520, 40754432, 50943040, 101886080, 203772160]

約数ペア:

[(1, 203772160), (2, 101886080), (4, 50943040), (5, 40754432), (8, 25471520), (10, 20377216), (16, 12735760), (20, 10188608), (32, 6367880), (40, 5094304), (64, 3183940), (80, 2547152), (128, 1591970), (160, 1273576), (256, 795985), (320, 636788), (397, 513280), (401, 508160), (640, 318394), (794, 256640), (802, 254080), (1280, 159197), (1588, 128320), (1604, 127040), (1985, 102656), (2005, 101632), (3176, 64160), (3208, 63520), (3970, 51328), (4010, 50816), (6352, 32080), (6416, 31760), (7940, 25664), (8020, 25408), (12704, 16040), (12832, 15880)]