21455042

素因数分解:

$2^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 48

約数和(自身を含む): 39481848

約数和(自身を除く): 18026806

約数列:

[1, 2, 7, 14, 37, 49, 61, 74, 97, 98, 122, 194, 259, 427, 518, 679, 854, 1358, 1813, 2257, 2989, 3589, 3626, 4514, 4753, 5917, 5978, 7178, 9506, 11834, 15799, 25123, 31598, 41419, 50246, 82838, 110593, 175861, 218929, 221186, 289933, 351722, 437858, 579866, 1532503, 3065006, 10727521, 21455042]

約数ペア:

[(1, 21455042), (2, 10727521), (7, 3065006), (14, 1532503), (37, 579866), (49, 437858), (61, 351722), (74, 289933), (97, 221186), (98, 218929), (122, 175861), (194, 110593), (259, 82838), (427, 50246), (518, 41419), (679, 31598), (854, 25123), (1358, 15799), (1813, 11834), (2257, 9506), (2989, 7178), (3589, 5978), (3626, 5917), (4514, 4753)]