20970290978

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{43661}}^1$

素因数の和:43732

約数の個数: 72

約数和(自身を含む): 40989448980

約数和(自身を除く): 20019158002

約数列:

[1, 2, 7, 13, 14, 26, 29, 49, 58, 91, 98, 169, 182, 203, 338, 377, 406, 637, 754, 1183, 1274, 1421, 2366, 2639, 2842, 4901, 5278, 8281, 9802, 16562, 18473, 34307, 36946, 43661, 68614, 87322, 240149, 305627, 480298, 567593, 611254, 1135186, 1266169, 2139389, 2532338, 3973151, 4278778, 7378709, 7946302, 8863183, 14757418, 16460197, 17726366, 27812057, 32920394, 51650963, 55624114, 62042281, 103301926, 115221379, 124084562, 213982561, 230442758, 361556741, 427965122, 723113482, 806549653, 1497877927, 1613099306, 2995755854, 10485145489, 20970290978]

約数ペア:

[(1, 20970290978), (2, 10485145489), (7, 2995755854), (13, 1613099306), (14, 1497877927), (26, 806549653), (29, 723113482), (49, 427965122), (58, 361556741), (91, 230442758), (98, 213982561), (169, 124084562), (182, 115221379), (203, 103301926), (338, 62042281), (377, 55624114), (406, 51650963), (637, 32920394), (754, 27812057), (1183, 17726366), (1274, 16460197), (1421, 14757418), (2366, 8863183), (2639, 7946302), (2842, 7378709), (4901, 4278778), (5278, 3973151), (8281, 2532338), (9802, 2139389), (16562, 1266169), (18473, 1135186), (34307, 611254), (36946, 567593), (43661, 480298), (68614, 305627), (87322, 240149)]