20802544180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1331789}}^1$

素因数の和:1331880

約数の個数: 48

約数和(自身を含む): 48327995520

約数和(自身を除く): 27525451340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 7810, 15620, 1331789, 2663578, 5327156, 6658945, 13317890, 14649679, 26635780, 29299358, 58598716, 73248395, 94557019, 146496790, 189114038, 292993580, 378228076, 472785095, 945570190, 1040127209, 1891140380, 2080254418, 4160508836, 5200636045, 10401272090, 20802544180]

約数ペア:

[(1, 20802544180), (2, 10401272090), (4, 5200636045), (5, 4160508836), (10, 2080254418), (11, 1891140380), (20, 1040127209), (22, 945570190), (44, 472785095), (55, 378228076), (71, 292993580), (110, 189114038), (142, 146496790), (220, 94557019), (284, 73248395), (355, 58598716), (710, 29299358), (781, 26635780), (1420, 14649679), (1562, 13317890), (3124, 6658945), (3905, 5327156), (7810, 2663578), (15620, 1331789)]