20172089960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{256121}}^1$

素因数の和:256322

約数の個数: 64

約数和(自身を含む): 49790116800

約数和(自身を除く): 29618026840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 358, 440, 716, 895, 1432, 1790, 1969, 3580, 3938, 7160, 7876, 9845, 15752, 19690, 39380, 78760, 256121, 512242, 1024484, 1280605, 2048968, 2561210, 2817331, 5122420, 5634662, 10244840, 11269324, 14086655, 22538648, 28173310, 45845659, 56346620, 91691318, 112693240, 183382636, 229228295, 366765272, 458456590, 504302249, 916913180, 1008604498, 1833826360, 2017208996, 2521511245, 4034417992, 5043022490, 10086044980, 20172089960]

約数ペア:

[(1, 20172089960), (2, 10086044980), (4, 5043022490), (5, 4034417992), (8, 2521511245), (10, 2017208996), (11, 1833826360), (20, 1008604498), (22, 916913180), (40, 504302249), (44, 458456590), (55, 366765272), (88, 229228295), (110, 183382636), (179, 112693240), (220, 91691318), (358, 56346620), (440, 45845659), (716, 28173310), (895, 22538648), (1432, 14086655), (1790, 11269324), (1969, 10244840), (3580, 5634662), (3938, 5122420), (7160, 2817331), (7876, 2561210), (9845, 2048968), (15752, 1280605), (19690, 1024484), (39380, 512242), (78760, 256121)]