21129400

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3643}}^1$

素因数の和:3688

約数の個数: 48

約数和(自身を含む): 50833800

約数和(自身を除く): 29704400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 1160, 1450, 2900, 3643, 5800, 7286, 14572, 18215, 29144, 36430, 72860, 91075, 105647, 145720, 182150, 211294, 364300, 422588, 528235, 728600, 845176, 1056470, 2112940, 2641175, 4225880, 5282350, 10564700, 21129400]

約数ペア:

[(1, 21129400), (2, 10564700), (4, 5282350), (5, 4225880), (8, 2641175), (10, 2112940), (20, 1056470), (25, 845176), (29, 728600), (40, 528235), (50, 422588), (58, 364300), (100, 211294), (116, 182150), (145, 145720), (200, 105647), (232, 91075), (290, 72860), (580, 36430), (725, 29144), (1160, 18215), (1450, 14572), (2900, 7286), (3643, 5800)]