18443647917

素因数分解:

$3^4\times {\mathrm{647}}^1\times {\mathrm{351931}}^1$

素因数の和:352590

約数の個数: 20

約数和(自身を含む): 27594284256

約数和(自身を除く): 9150636339

約数列:

[1, 3, 9, 27, 81, 647, 1941, 5823, 17469, 52407, 351931, 1055793, 3167379, 9502137, 28506411, 227699357, 683098071, 2049294213, 6147882639, 18443647917]

約数ペア:

[(1, 18443647917), (3, 6147882639), (9, 2049294213), (27, 683098071), (81, 227699357), (647, 28506411), (1941, 9502137), (5823, 3167379), (17469, 1055793), (52407, 351931)]