990147159

素因数分解:

$3^4\times {\mathrm{2473}}^1\times {\mathrm{4943}}^1$

素因数の和:7428

約数の個数: 20

約数和(自身を含む): 1480006176

約数和(自身を除く): 489859017

約数列:

[1, 3, 9, 27, 81, 2473, 4943, 7419, 14829, 22257, 44487, 66771, 133461, 200313, 400383, 12224039, 36672117, 110016351, 330049053, 990147159]

約数ペア:

[(1, 990147159), (3, 330049053), (9, 110016351), (27, 36672117), (81, 12224039), (2473, 400383), (4943, 200313), (7419, 133461), (14829, 66771), (22257, 44487)]