18974319

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9929}}^1$

素因数の和:9959

約数の個数: 24

約数和(自身を含む): 31696560

約数和(自身を除く): 12722241

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9929, 29787, 69503, 129077, 208509, 387231, 486521, 903539, 1459563, 2710617, 6324773, 18974319]

約数ペア:

[(1, 18974319), (3, 6324773), (7, 2710617), (13, 1459563), (21, 903539), (39, 486521), (49, 387231), (91, 208509), (147, 129077), (273, 69503), (637, 29787), (1911, 9929)]