19721456

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{39761}}^1$

素因数の和:39800

約数の個数: 20

約数和(自身を含む): 39443904

約数和(自身を除く): 19722448

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 39761, 79522, 159044, 318088, 636176, 1232591, 2465182, 4930364, 9860728, 19721456]

約数ペア:

[(1, 19721456), (2, 9860728), (4, 4930364), (8, 2465182), (16, 1232591), (31, 636176), (62, 318088), (124, 159044), (248, 79522), (496, 39761)]