20807710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{443}}^1$

素因数の和:529

約数の個数: 64

約数和(自身を含む): 47568384

約数和(自身を除く): 26760674

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 61, 70, 77, 110, 122, 154, 305, 385, 427, 443, 610, 671, 770, 854, 886, 1342, 2135, 2215, 3101, 3355, 4270, 4430, 4697, 4873, 6202, 6710, 9394, 9746, 15505, 23485, 24365, 27023, 31010, 34111, 46970, 48730, 54046, 68222, 135115, 170555, 189161, 270230, 297253, 341110, 378322, 594506, 945805, 1486265, 1891610, 2080771, 2972530, 4161542, 10403855, 20807710]

約数ペア:

[(1, 20807710), (2, 10403855), (5, 4161542), (7, 2972530), (10, 2080771), (11, 1891610), (14, 1486265), (22, 945805), (35, 594506), (55, 378322), (61, 341110), (70, 297253), (77, 270230), (110, 189161), (122, 170555), (154, 135115), (305, 68222), (385, 54046), (427, 48730), (443, 46970), (610, 34111), (671, 31010), (770, 27023), (854, 24365), (886, 23485), (1342, 15505), (2135, 9746), (2215, 9394), (3101, 6710), (3355, 6202), (4270, 4873), (4430, 4697)]