20405488

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{3853}}^1$

素因数の和:4192

約数の個数: 20

約数和(自身を含む): 39665368

約数和(自身を除く): 19259880

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 3853, 5296, 7706, 15412, 30824, 61648, 1275343, 2550686, 5101372, 10202744, 20405488]

約数ペア:

[(1, 20405488), (2, 10202744), (4, 5101372), (8, 2550686), (16, 1275343), (331, 61648), (662, 30824), (1324, 15412), (2648, 7706), (3853, 5296)]