20814608

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:455

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 20968432

約数列:

[1, 2, 4, 8, 16, 47, 89, 94, 178, 188, 311, 356, 376, 622, 712, 752, 1244, 1424, 2488, 4183, 4976, 8366, 14617, 16732, 27679, 29234, 33464, 55358, 58468, 66928, 110716, 116936, 221432, 233872, 442864, 1300913, 2601826, 5203652, 10407304, 20814608]

約数ペア:

[(1, 20814608), (2, 10407304), (4, 5203652), (8, 2601826), (16, 1300913), (47, 442864), (89, 233872), (94, 221432), (178, 116936), (188, 110716), (311, 66928), (356, 58468), (376, 55358), (622, 33464), (712, 29234), (752, 27679), (1244, 16732), (1424, 14617), (2488, 8366), (4183, 4976)]