21779601

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{839}}^1$

素因数の和:1368

約数の個数: 16

約数和(自身を含む): 30844800

約数和(自身を除く): 9065199

約数列:

[1, 3, 17, 51, 509, 839, 1527, 2517, 8653, 14263, 25959, 42789, 427051, 1281153, 7259867, 21779601]

約数ペア:

[(1, 21779601), (3, 7259867), (17, 1281153), (51, 427051), (509, 42789), (839, 25959), (1527, 14263), (2517, 8653)]