20818600

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9463}}^1$

素因数の和:9490

約数の個数: 48

約数和(自身を含む): 52809120

約数和(自身を除く): 31990520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9463, 18926, 37852, 47315, 75704, 94630, 104093, 189260, 208186, 236575, 378520, 416372, 473150, 520465, 832744, 946300, 1040930, 1892600, 2081860, 2602325, 4163720, 5204650, 10409300, 20818600]

約数ペア:

[(1, 20818600), (2, 10409300), (4, 5204650), (5, 4163720), (8, 2602325), (10, 2081860), (11, 1892600), (20, 1040930), (22, 946300), (25, 832744), (40, 520465), (44, 473150), (50, 416372), (55, 378520), (88, 236575), (100, 208186), (110, 189260), (200, 104093), (220, 94630), (275, 75704), (440, 47315), (550, 37852), (1100, 18926), (2200, 9463)]