21856784

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{18713}}^1$

素因数の和:18794

約数の個数: 20

約数和(自身を含む): 42929916

約数和(自身を除く): 21073132

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 18713, 37426, 74852, 149704, 299408, 1366049, 2732098, 5464196, 10928392, 21856784]

約数ペア:

[(1, 21856784), (2, 10928392), (4, 5464196), (8, 2732098), (16, 1366049), (73, 299408), (146, 149704), (292, 74852), (584, 37426), (1168, 18713)]