18436887

素因数分解:

$3^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:548

約数の個数: 36

約数和(自身を含む): 31370976

約数和(自身を除く): 12934089

約数列:

[1, 3, 7, 9, 21, 49, 63, 97, 147, 291, 431, 441, 679, 873, 1293, 2037, 3017, 3879, 4753, 6111, 9051, 14259, 21119, 27153, 41807, 42777, 63357, 125421, 190071, 292649, 376263, 877947, 2048543, 2633841, 6145629, 18436887]

約数ペア:

[(1, 18436887), (3, 6145629), (7, 2633841), (9, 2048543), (21, 877947), (49, 376263), (63, 292649), (97, 190071), (147, 125421), (291, 63357), (431, 42777), (441, 41807), (679, 27153), (873, 21119), (1293, 14259), (2037, 9051), (3017, 6111), (3879, 4753)]