21084100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 48746880

約数和(自身を除く): 27662780

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 89, 92, 100, 103, 115, 178, 206, 230, 356, 412, 445, 460, 515, 575, 890, 1030, 1150, 1780, 2047, 2060, 2225, 2300, 2369, 2575, 4094, 4450, 4738, 5150, 8188, 8900, 9167, 9476, 10235, 10300, 11845, 18334, 20470, 23690, 36668, 40940, 45835, 47380, 51175, 59225, 91670, 102350, 118450, 183340, 204700, 210841, 229175, 236900, 421682, 458350, 843364, 916700, 1054205, 2108410, 4216820, 5271025, 10542050, 21084100]

約数ペア:

[(1, 21084100), (2, 10542050), (4, 5271025), (5, 4216820), (10, 2108410), (20, 1054205), (23, 916700), (25, 843364), (46, 458350), (50, 421682), (89, 236900), (92, 229175), (100, 210841), (103, 204700), (115, 183340), (178, 118450), (206, 102350), (230, 91670), (356, 59225), (412, 51175), (445, 47380), (460, 45835), (515, 40940), (575, 36668), (890, 23690), (1030, 20470), (1150, 18334), (1780, 11845), (2047, 10300), (2060, 10235), (2225, 9476), (2300, 9167), (2369, 8900), (2575, 8188), (4094, 5150), (4450, 4738)]