20376440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1193}}^1$

素因数の和:1272

約数の個数: 64

約数和(自身を含む): 53300160

約数和(自身を除く): 32923720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1193, 1220, 1708, 2135, 2386, 2440, 3416, 4270, 4772, 5965, 8351, 8540, 9544, 11930, 16702, 17080, 23860, 33404, 41755, 47720, 66808, 72773, 83510, 145546, 167020, 291092, 334040, 363865, 509411, 582184, 727730, 1018822, 1455460, 2037644, 2547055, 2910920, 4075288, 5094110, 10188220, 20376440]

約数ペア:

[(1, 20376440), (2, 10188220), (4, 5094110), (5, 4075288), (7, 2910920), (8, 2547055), (10, 2037644), (14, 1455460), (20, 1018822), (28, 727730), (35, 582184), (40, 509411), (56, 363865), (61, 334040), (70, 291092), (122, 167020), (140, 145546), (244, 83510), (280, 72773), (305, 66808), (427, 47720), (488, 41755), (610, 33404), (854, 23860), (1193, 17080), (1220, 16702), (1708, 11930), (2135, 9544), (2386, 8540), (2440, 8351), (3416, 5965), (4270, 4772)]