20972816

素因数分解:

$2^4\times {\mathrm{1310801}}^1$

素因数の和:1310809

約数の個数: 10

約数和(自身を含む): 40634862

約数和(自身を除く): 19662046

約数列:

[1, 2, 4, 8, 16, 1310801, 2621602, 5243204, 10486408, 20972816]

約数ペア:

[(1, 20972816), (2, 10486408), (4, 5243204), (8, 2621602), (16, 1310801)]