20378600

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 52898400

約数和(自身を除く): 32519800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 59, 88, 100, 110, 118, 157, 200, 220, 236, 275, 295, 314, 440, 472, 550, 590, 628, 649, 785, 1100, 1180, 1256, 1298, 1475, 1570, 1727, 2200, 2360, 2596, 2950, 3140, 3245, 3454, 3925, 5192, 5900, 6280, 6490, 6908, 7850, 8635, 9263, 11800, 12980, 13816, 15700, 16225, 17270, 18526, 25960, 31400, 32450, 34540, 37052, 43175, 46315, 64900, 69080, 74104, 86350, 92630, 101893, 129800, 172700, 185260, 203786, 231575, 345400, 370520, 407572, 463150, 509465, 815144, 926300, 1018930, 1852600, 2037860, 2547325, 4075720, 5094650, 10189300, 20378600]

約数ペア:

[(1, 20378600), (2, 10189300), (4, 5094650), (5, 4075720), (8, 2547325), (10, 2037860), (11, 1852600), (20, 1018930), (22, 926300), (25, 815144), (40, 509465), (44, 463150), (50, 407572), (55, 370520), (59, 345400), (88, 231575), (100, 203786), (110, 185260), (118, 172700), (157, 129800), (200, 101893), (220, 92630), (236, 86350), (275, 74104), (295, 69080), (314, 64900), (440, 46315), (472, 43175), (550, 37052), (590, 34540), (628, 32450), (649, 31400), (785, 25960), (1100, 18526), (1180, 17270), (1256, 16225), (1298, 15700), (1475, 13816), (1570, 12980), (1727, 11800), (2200, 9263), (2360, 8635), (2596, 7850), (2950, 6908), (3140, 6490), (3245, 6280), (3454, 5900), (3925, 5192)]