31909221

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{23173}}^1$

素因数の和:23202

約数の個数: 20

約数和(自身を含む): 50472972

約数和(自身を除く): 18563751

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 23173, 69519, 208557, 393941, 625671, 1181823, 1877013, 3545469, 10636407, 31909221]

約数ペア:

[(1, 31909221), (3, 10636407), (9, 3545469), (17, 1877013), (27, 1181823), (51, 625671), (81, 393941), (153, 208557), (459, 69519), (1377, 23173)]