20698566

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 49387008

約数和(自身を除く): 28688442

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 73, 86, 129, 146, 157, 219, 258, 301, 314, 438, 471, 511, 602, 903, 942, 1022, 1099, 1533, 1806, 2198, 3066, 3139, 3297, 6278, 6594, 6751, 9417, 11461, 13502, 18834, 20253, 21973, 22922, 34383, 40506, 43946, 47257, 65919, 68766, 80227, 94514, 131838, 141771, 160454, 240681, 283542, 481362, 492823, 985646, 1478469, 2956938, 3449761, 6899522, 10349283, 20698566]

約数ペア:

[(1, 20698566), (2, 10349283), (3, 6899522), (6, 3449761), (7, 2956938), (14, 1478469), (21, 985646), (42, 492823), (43, 481362), (73, 283542), (86, 240681), (129, 160454), (146, 141771), (157, 131838), (219, 94514), (258, 80227), (301, 68766), (314, 65919), (438, 47257), (471, 43946), (511, 40506), (602, 34383), (903, 22922), (942, 21973), (1022, 20253), (1099, 18834), (1533, 13502), (1806, 11461), (2198, 9417), (3066, 6751), (3139, 6594), (3297, 6278)]