21676016

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{19081}}^1$

素因数の和:19160

約数の個数: 20

約数和(自身を含む): 42591024

約数和(自身を除く): 20915008

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 19081, 38162, 76324, 152648, 305296, 1354751, 2709502, 5419004, 10838008, 21676016]

約数ペア:

[(1, 21676016), (2, 10838008), (4, 5419004), (8, 2709502), (16, 1354751), (71, 305296), (142, 152648), (284, 76324), (568, 38162), (1136, 19081)]