31439020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 68302080

約数和(自身を除く): 36863060

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 139, 172, 215, 263, 278, 430, 526, 556, 695, 860, 1052, 1315, 1390, 2630, 2780, 5260, 5977, 11309, 11954, 22618, 23908, 29885, 36557, 45236, 56545, 59770, 73114, 113090, 119540, 146228, 182785, 226180, 365570, 731140, 1571951, 3143902, 6287804, 7859755, 15719510, 31439020]

約数ペア:

[(1, 31439020), (2, 15719510), (4, 7859755), (5, 6287804), (10, 3143902), (20, 1571951), (43, 731140), (86, 365570), (139, 226180), (172, 182785), (215, 146228), (263, 119540), (278, 113090), (430, 73114), (526, 59770), (556, 56545), (695, 45236), (860, 36557), (1052, 29885), (1315, 23908), (1390, 22618), (2630, 11954), (2780, 11309), (5260, 5977)]