42720500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2049

約数の個数: 48

約数和(自身を含む): 95519424

約数和(自身を除く): 52798924

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 1075, 1987, 2150, 3974, 4300, 5375, 7948, 9935, 10750, 19870, 21500, 39740, 49675, 85441, 99350, 170882, 198700, 248375, 341764, 427205, 496750, 854410, 993500, 1708820, 2136025, 4272050, 8544100, 10680125, 21360250, 42720500]

約数ペア:

[(1, 42720500), (2, 21360250), (4, 10680125), (5, 8544100), (10, 4272050), (20, 2136025), (25, 1708820), (43, 993500), (50, 854410), (86, 496750), (100, 427205), (125, 341764), (172, 248375), (215, 198700), (250, 170882), (430, 99350), (500, 85441), (860, 49675), (1075, 39740), (1987, 21500), (2150, 19870), (3974, 10750), (4300, 9935), (5375, 7948)]