18187731

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 29552640

約数和(自身を除く): 11364909

約数列:

[1, 3, 9, 19, 31, 47, 57, 73, 93, 141, 171, 219, 279, 423, 589, 657, 893, 1387, 1457, 1767, 2263, 2679, 3431, 4161, 4371, 5301, 6789, 8037, 10293, 12483, 13113, 20367, 27683, 30879, 42997, 65189, 83049, 106361, 128991, 195567, 249147, 319083, 386973, 586701, 957249, 2020859, 6062577, 18187731]

約数ペア:

[(1, 18187731), (3, 6062577), (9, 2020859), (19, 957249), (31, 586701), (47, 386973), (57, 319083), (73, 249147), (93, 195567), (141, 128991), (171, 106361), (219, 83049), (279, 65189), (423, 42997), (589, 30879), (657, 27683), (893, 20367), (1387, 13113), (1457, 12483), (1767, 10293), (2263, 8037), (2679, 6789), (3431, 5301), (4161, 4371)]