19789648

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{9739}}^1$

素因数の和:9874

約数の個数: 20

約数和(自身を含む): 38648320

約数和(自身を除く): 18858672

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 9739, 19478, 38956, 77912, 155824, 1236853, 2473706, 4947412, 9894824, 19789648]

約数ペア:

[(1, 19789648), (2, 9894824), (4, 4947412), (8, 2473706), (16, 1236853), (127, 155824), (254, 77912), (508, 38956), (1016, 19478), (2032, 9739)]