638961068

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{16981}}^1$

素因数の和:17417

約数の個数: 24

約数和(自身を含む): 1169720160

約数和(自身を除く): 530759092

約数列:

[1, 2, 4, 23, 46, 92, 409, 818, 1636, 9407, 16981, 18814, 33962, 37628, 67924, 390563, 781126, 1562252, 6945229, 13890458, 27780916, 159740267, 319480534, 638961068]

約数ペア:

[(1, 638961068), (2, 319480534), (4, 159740267), (23, 27780916), (46, 13890458), (92, 6945229), (409, 1562252), (818, 781126), (1636, 390563), (9407, 67924), (16981, 37628), (18814, 33962)]