20891608

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{36781}}^1$

素因数の和:36858

約数の個数: 16

約数和(自身を含む): 39724560

約数和(自身を除く): 18832952

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 36781, 73562, 147124, 294248, 2611451, 5222902, 10445804, 20891608]

約数ペア:

[(1, 20891608), (2, 10445804), (4, 5222902), (8, 2611451), (71, 294248), (142, 147124), (284, 73562), (568, 36781)]