1277747379

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{91183}}^1$

素因数の和:91368

約数の個数: 20

約数和(自身を含む): 1919787936

約数和(自身を除く): 642040557

約数列:

[1, 3, 9, 27, 81, 173, 519, 1557, 4671, 14013, 91183, 273549, 820647, 2461941, 7385823, 15774659, 47323977, 141971931, 425915793, 1277747379]

約数ペア:

[(1, 1277747379), (3, 425915793), (9, 141971931), (27, 47323977), (81, 15774659), (173, 7385823), (519, 2461941), (1557, 820647), (4671, 273549), (14013, 91183)]