20513012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{394481}}^1$

素因数の和:394498

約数の個数: 12

約数和(自身を含む): 38659236

約数和(自身を除く): 18146224

約数列:

[1, 2, 4, 13, 26, 52, 394481, 788962, 1577924, 5128253, 10256506, 20513012]

約数ペア:

[(1, 20513012), (2, 10256506), (4, 5128253), (13, 1577924), (26, 788962), (52, 394481)]