31129371

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 55910400

約数和(自身を除く): 24781029

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 191, 199, 273, 573, 597, 819, 1337, 1393, 1719, 1791, 2483, 2587, 4011, 4179, 7449, 7761, 12033, 12537, 17381, 18109, 22347, 23283, 38009, 52143, 54327, 114027, 156429, 162981, 266063, 342081, 494117, 798189, 1482351, 2394567, 3458819, 4447053, 10376457, 31129371]

約数ペア:

[(1, 31129371), (3, 10376457), (7, 4447053), (9, 3458819), (13, 2394567), (21, 1482351), (39, 798189), (63, 494117), (91, 342081), (117, 266063), (191, 162981), (199, 156429), (273, 114027), (573, 54327), (597, 52143), (819, 38009), (1337, 23283), (1393, 22347), (1719, 18109), (1791, 17381), (2483, 12537), (2587, 12033), (4011, 7761), (4179, 7449)]